Materiały źródłowe

• #1 Stress fracture – Wikipedia

  https://en.wikipedia.org/wiki/Stress_fracture

  A stress fracture is a fatigue-induced bone fracture caused by repeated stress over time. Instead of resulting from a single severe impact, stress fractures are the result of accumulated injury from repeated submaximal loading, such as running or jumping. […] Bones are constantly attempting to remodel and repair themselves, especially during a sport where extraordinary stress is applied to the bone. Over time, if enough stress is placed on the bone that it exhausts the capacity of the bone to remodel, a weakened site a stress fracture may appear on the bone. The fracture does not appear suddenly. It occurs from repeated traumas, none of which is sufficient to cause a sudden break, but which, when added together, overwhelm the osteoblasts that remodel the bone. […] Potential causes include overload caused by muscle contraction, amenorrhea, an altered stress distribution in the bone accompanying muscle fatigue, a change in ground reaction force (concrete to grass) or the performance of a rhythmically repetitive stress that leads up to a vibratory summation point.

• #2 Stress Fractures: Symptoms, Causes & Treatment

  https://my.clevelandclinic.org/health/diseases/15841-stress-fractures

  Stress fractures are usually overuse injuries. They happen when physical activity puts too much pressure on a bone and it doesnt have enough time to recover. […] Stress fractures are exactly what their name sounds like fractures that happen when something puts too much stress on your bone. Healthcare providers sometimes call stress fractures overuse injuries because repetitively using the same part of your body usually causes them. […] Any repetitive motion or activity that puts pressure on your bones can cause a stress fracture playing a sport or doing physical work are common causes. […] Stress fractures are almost always overuse injuries. This means they happen when something puts too much pressure on a bone and the bone doesnt have enough time to recover after physical activity. Stress fractures usually develop slowly over time when you do a repetitive motion (like training for a sport or performing the same type of movement all day at work).

• #3 Stress Fractures: Etiology, Epidemiology, Diagnosis, Treatment, and Prevention – PubMed

  https://pubmed.ncbi.nlm.nih.gov/28599045/

  Stress fractures are part of a continuum of changes in healthy bones in response to repeated mechanical deformation from physical activity. If the activity produces excessive repetitive stress, osteoclastic processes in the bone may proceed at a faster pace than osteoblastic processes, thus weakening the bone and augmenting susceptibility to stress fractures. […] Well-documented risk factors include female sex, white ethnicity, older age, taller stature, lower aerobic fitness, prior physical inactivity, greater amounts of current physical training, thinner bones, cigarette smoking, and inadequate intake of vitamin D and/or calcium. […] A sudden increase in the volume of physical activity along with other risk factors is often reported.

• #4 Stress Fractures: Causes, Symptoms, and Recovery | The Bone & Joint Center

  https://www.bone-joint.com/stress-fractures-causes-symptoms-and-recovery/

  According to an estimate, stress fractures account for approximately 20% of all sports injuries, which are injuries that are sustained by athletes and physically active individuals. […] Stress fractures occur when the muscles become fatigued and cannot absorb added shock, causing the muscle’s load to transfer to the bone, causing a tiny crack known as a stress fracture. […] Stress fractures are injuries that often result from a sudden increase in the amount or intensity of physical activity. The bone adapts gradually to increased loads through a process called remodeling. This process involves the resorption (destruction) and rebuilding of bone tissue, which accelerates when the load on the bone increases. […] However, if the bones are subjected to unaccustomed force without enough recovery time, they resorb cells faster than the body can replace them. This imbalance makes the bones more susceptible to a stress fracture.

• #5 Stress Fractures: Their Causes and Principles of Treatment | Musculoskeletal Key

  https://musculoskeletalkey.com/stress-fractures-their-causes-and-principles-of-treatment/

  Stress fractures represent one form of breakdown in the skeletal system. It can be defined as a partial or complete fracture of bone that results from the repeated application of a stress lower than that required to fracture the bone in a single loading situation. […] Following the radiographic description of metatarsal stress fractures, many theories were set forth to explain the etiology of this injury. Most of the reports were based on series that were small, and the theories proposed were concerned with either mechanical factors, such as spasm of the interossei, or flat feet, or with inflammatory reactions, such as nonsuppurative osteomyelitis. […] It is now recognized that the development of a stress fracture represents the end product of the failure of bone to adapt adequately to the mechanical loads experienced during physical activity. Ground reaction forces and muscular contraction result in bone strain. It is these repetitive strains that are thought to cause a stress fracture.

• #6 Stress Fractures: Their Causes and Principles of Treatment | Musculoskeletal Key

  https://musculoskeletalkey.com/stress-fractures-their-causes-and-principles-of-treatment/

  The processes of microdamage accumulation and bone remodeling, both resulting from bone strain, play an important part in the development of a stress fracture. If microdamage accumulates, repetitive loading continues, and remodeling cannot maintain the integrity of the bone; a stress fracture may result. […] This may occur because the microdamage is too extensive to be repaired by normal remodeling, because depressed remodeling processes cannot adequately repair normally occurring microdamage, or because of some combination of these factors.

• #7 Stress Fractures: Symptoms, Causes & Treatment

  https://my.clevelandclinic.org/health/diseases/15841-stress-fractures

  Stress fractures start as inflammation on a bones surface (healthcare providers call this a stress reaction). Stress reactions are like deep bone bruises. If something keeps putting pressure on that same spot before the stress reaction can heal, your bone can crack and create a stress fracture. […] Some of the most common causes of stress fractures include: Practicing or training too often without resting enough. Starting a new sport or physical activity without the right training, guidance or equipment. Quickly increasing your activity level (suddenly ramping up workouts, training or other physical activity). Changing the surface you train or work on (switching from running on an indoor track to road running, or starting a job that requires you to stand on a hard floor like concrete). Working or training without proper equipment. Specializing in one sport too early (children who play the same sport year-round without a break between seasons are more likely to experience a stress fracture than kids who play a variety of sports).

• #8 Common Stress Fractures | AAFP

  https://www.aafp.org/pubs/afp/issues/2003/1015/p1527.html

  Lower extremity stress fractures are common injuries most often associated with participation in sports involving running, jumping, or repetitive stress. […] Stress fractures can result from participation in many activities and sports, especially those requiring running and jumping. […] Although several factors appear to contribute to the development of stress fractures, they generally occur as a result of a repetitive use injury that exceeds the intrinsic ability of the bone to repair itself. […] Two competing, but not mutually exclusive, theories may explain the development of stress fractures. One theory holds that during the initial increase in exercise activity, the osteoblastic activity lags behind osteoclastic activity by a few weeks, resulting in a period during which bone is more susceptible to injury.

• #9 Stress Fractures: Etiology, Epidemiology, Diagnosis, Treatment, and Prevention – PubMed

  https://pubmed.ncbi.nlm.nih.gov/28599045/

  Stress fractures are part of a continuum of changes in healthy bones in response to repeated mechanical deformation from physical activity. If the activity produces excessive repetitive stress, osteoclastic processes in the bone may proceed at a faster pace than osteoblastic processes, thus weakening the bone and augmenting susceptibility to stress fractures. […] Well-documented risk factors include female sex, white ethnicity, older age, taller stature, lower aerobic fitness, prior physical inactivity, greater amounts of current physical training, thinner bones, cigarette smoking, and inadequate intake of vitamin D and/or calcium. […] A sudden increase in the volume of physical activity along with other risk factors is often reported.

• #10 Stress Fractures – StatPearls – NCBI Bookshelf

  https://www.ncbi.nlm.nih.gov/books/NBK554538/

  Stress fractures occur when bone, typically in the lower extremities, is subjected to repeated mechanical stress that results in microscopic fractures. […] Stress fractures are due to an abrupt increase in activity or training patterns. There are intrinsic and extrinsic factors contributing to the development of the injury, with the bulk of the information coming from studies on military personnel. […] Intrinsic factors include poor physical conditioning, female, hormonal disorder, menstrual disorder, poor bone density, reduced muscle mass, genu valgum knees, and a short leg. Extrinsic factors include high-impact sports activities like running, jumping, abrupt increase in physical activity, irregular or angled running surface, poor footwear, running shoe wear older than 6 months, deficient vitamin D and calcium, and smoking.

• #11 Stress Fractures – StatPearls – NCBI Bookshelf

  https://www.ncbi.nlm.nih.gov/books/NBK554538/

  The most common risk factor is an abrupt increase in activity. […] In general, with male and female athletes participating in the same training regime, female athletes have a higher incidence of stress fractures. […] The most common sites for stress fractures are as follows in decreasing order metatarsals, tibia, tarsals, femur, and fibula, followed by the pelvis. […] Some stress fractures are more common in specific sports. […] Stress fractures account for about 20% of all sports medicine injuries, and runners who average more than 25 miles a week are considered high risk. […] In addition to the intrinsic and extrinsic factors already noted, there are additional factors influencing stress fracture development. […] Another factor influencing stress fracture development is overtraining, or a more current name would be relative energy deficiency syndrome. […] Vitamin D is another potential factor influencing the development of stress fractures.

• #12 Causes and Risk Factors of Foot Stress Fractures

  https://www.sports-health.com/sports-injuries/ankle-and-foot-injuries/causes-and-risk-factors-foot-stress-fractures

  As the name suggests, foot stress fractures can occur from any activity that puts too much stress on a bone, such as a new workout routine. Other causes of foot stress fractures include: […] Sudden increase in activity. This increase can be in frequency, duration, or intensity of an activity. For example, an athlete training for a marathon may increase mileage too quickly, which can be hard on the feet. […] Change in surface. Going from a soft surface, such as an indoor running track or turf, to a hard surface, such as a sidewalk, can cause stress to the bones of the feet. […] Improper technique. Other foot conditions, such as blisters or bunions, may impact technique (the way the foot strikes the ground) when running or walking. People may avoid putting weight on a certain area of the foot and unintentionally cause undue stress to a particular bone.

• #13 Stress Fracture Causes

  https://www.sports-health.com/sports-injuries/general-injuries/stress-fracture-causes

  Stress fractures may occur if athletes rapidly increase their level of activity in one or more of the following ways: […] Athletes who increase their number of exercise sessions without giving their bodies adequate time to adjust may develop stress fractures. […] Increasing the length of individual exercise sessions too quickly can lead to stress fractures. […] Even if athletes do not change the frequency or duration of their regular workouts, a change in the level of exertion in those workouts can still lead to stress fractures if the body is not given enough time to adjust to the new level of intensity. […] Athletes who have grown accustomed to one type of playing surface may develop stress fractures if they make a switch to a new type of playing surface. […] Sometimes a simple change in footwear and/or amount of walking activity is all that is required to cause a stress fracture.

• #14 Stress Fractures in Young Athletes

  https://www.nationwidechildrens.org/conditions/health-library/stress-fractures-in-young-athletes

  Stress fractures happen when muscles are too tired to take on the impact of exercise, and the bones absorb the added stress. […] These are the most common causes of stress fractures: Increasing the frequency or intensity of exercise too quickly, Suddenly changing the workout surface, Getting sudden and significantly more playing time, Using or wearing gear that doesn’t offer enough support, such as shoes that are worn out, Insufficient periods of rest between practice or events. […] Stress fractures can happen during any number of sports, but they tend to be most frequent in young athletes who participate in sports that involve running and jumping, such as basketball, gymnastics, and track and field. These sports involve repetitive movements that strain the muscles and bones. This increases the risk for a stress fracture.

• #15 Stress Fracture Causes

  https://www.sports-health.com/sports-injuries/general-injuries/stress-fracture-causes

  Stress fractures may occur if athletes rapidly increase their level of activity in one or more of the following ways: […] Athletes who increase their number of exercise sessions without giving their bodies adequate time to adjust may develop stress fractures. […] Increasing the length of individual exercise sessions too quickly can lead to stress fractures. […] Even if athletes do not change the frequency or duration of their regular workouts, a change in the level of exertion in those workouts can still lead to stress fractures if the body is not given enough time to adjust to the new level of intensity. […] Athletes who have grown accustomed to one type of playing surface may develop stress fractures if they make a switch to a new type of playing surface. […] Sometimes a simple change in footwear and/or amount of walking activity is all that is required to cause a stress fracture.

• #16 Causes and Risk Factors of Foot Stress Fractures

  https://www.sports-health.com/sports-injuries/ankle-and-foot-injuries/causes-and-risk-factors-foot-stress-fractures

  As the name suggests, foot stress fractures can occur from any activity that puts too much stress on a bone, such as a new workout routine. Other causes of foot stress fractures include: […] Sudden increase in activity. This increase can be in frequency, duration, or intensity of an activity. For example, an athlete training for a marathon may increase mileage too quickly, which can be hard on the feet. […] Change in surface. Going from a soft surface, such as an indoor running track or turf, to a hard surface, such as a sidewalk, can cause stress to the bones of the feet. […] Improper technique. Other foot conditions, such as blisters or bunions, may impact technique (the way the foot strikes the ground) when running or walking. People may avoid putting weight on a certain area of the foot and unintentionally cause undue stress to a particular bone.

• #17 Stress Fractures: Symptoms, Causes & Treatment

  https://my.clevelandclinic.org/health/diseases/15841-stress-fractures

  Stress fractures start as inflammation on a bones surface (healthcare providers call this a stress reaction). Stress reactions are like deep bone bruises. If something keeps putting pressure on that same spot before the stress reaction can heal, your bone can crack and create a stress fracture. […] Some of the most common causes of stress fractures include: Practicing or training too often without resting enough. Starting a new sport or physical activity without the right training, guidance or equipment. Quickly increasing your activity level (suddenly ramping up workouts, training or other physical activity). Changing the surface you train or work on (switching from running on an indoor track to road running, or starting a job that requires you to stand on a hard floor like concrete). Working or training without proper equipment. Specializing in one sport too early (children who play the same sport year-round without a break between seasons are more likely to experience a stress fracture than kids who play a variety of sports).

• #18 Stress Fracture Causes

  https://www.sports-health.com/sports-injuries/general-injuries/stress-fracture-causes

  Athletes who lack the athletic conditioning to take on a certain level of sports activity or overdo it in a single sport may develop stress fractures, due to lack of cross-training. […] Athletes who expect to return to their peak-season level of conditioning after the off-season risk developing stress fractures. […] Year-round athletes who do not change sports with each passing season may develop stress fractures, especially during the childhood and adolescent years. […] Playing sports with old, worn-out equipment, ill-fitting equipment, or no equipment at all can result in stress fractures. […] Athletes who do not follow established techniques when playing their sport can develop stress fractures. […] Early-onset osteoporosis in adolescent girls and/or elite female athletes related to high levels of athletic intensity and poor nutrition can cause stress fractures.

• #19 Stress Fractures: Symptoms, Causes & Treatment

  https://my.clevelandclinic.org/health/diseases/15841-stress-fractures

  Stress fractures start as inflammation on a bones surface (healthcare providers call this a stress reaction). Stress reactions are like deep bone bruises. If something keeps putting pressure on that same spot before the stress reaction can heal, your bone can crack and create a stress fracture. […] Some of the most common causes of stress fractures include: Practicing or training too often without resting enough. Starting a new sport or physical activity without the right training, guidance or equipment. Quickly increasing your activity level (suddenly ramping up workouts, training or other physical activity). Changing the surface you train or work on (switching from running on an indoor track to road running, or starting a job that requires you to stand on a hard floor like concrete). Working or training without proper equipment. Specializing in one sport too early (children who play the same sport year-round without a break between seasons are more likely to experience a stress fracture than kids who play a variety of sports).

• #20 Stress Fractures: Symptoms, Causes & Treatment

  https://my.clevelandclinic.org/health/diseases/15841-stress-fractures

  Stress fractures start as inflammation on a bones surface (healthcare providers call this a stress reaction). Stress reactions are like deep bone bruises. If something keeps putting pressure on that same spot before the stress reaction can heal, your bone can crack and create a stress fracture. […] Some of the most common causes of stress fractures include: Practicing or training too often without resting enough. Starting a new sport or physical activity without the right training, guidance or equipment. Quickly increasing your activity level (suddenly ramping up workouts, training or other physical activity). Changing the surface you train or work on (switching from running on an indoor track to road running, or starting a job that requires you to stand on a hard floor like concrete). Working or training without proper equipment. Specializing in one sport too early (children who play the same sport year-round without a break between seasons are more likely to experience a stress fracture than kids who play a variety of sports).

• #21 Causes and Risk Factors of Foot Stress Fractures

  https://www.sports-health.com/sports-injuries/ankle-and-foot-injuries/causes-and-risk-factors-foot-stress-fractures

  As the name suggests, foot stress fractures can occur from any activity that puts too much stress on a bone, such as a new workout routine. Other causes of foot stress fractures include: […] Sudden increase in activity. This increase can be in frequency, duration, or intensity of an activity. For example, an athlete training for a marathon may increase mileage too quickly, which can be hard on the feet. […] Change in surface. Going from a soft surface, such as an indoor running track or turf, to a hard surface, such as a sidewalk, can cause stress to the bones of the feet. […] Improper technique. Other foot conditions, such as blisters or bunions, may impact technique (the way the foot strikes the ground) when running or walking. People may avoid putting weight on a certain area of the foot and unintentionally cause undue stress to a particular bone.

• #22

  https://www.runnersworld.com/uk/health/injury/a774656/stress-fractures/

  Your running form is also thought to potentially impact your likelihood of developing stress fractures at least in some cases. There does seem to be a link to tibial stress fractures with those who overstride, with a definite heel strike, says physiotherapist Neil Smith. […] Poor or insufficient nutrition can also put you at risk of stress fractures. Research published in The Journal of Foot Ankle Surgery reported that low levels of vitamin D may increase the risk and suggests that active individuals may need higher levels of it than the general population. […] If you’re a treadmill runner who suddenly shifts to doing all your miles on the road, or a trail runner who suddenly moves to tarmac, then this can also increase the risk of a stress fracture. […] Wearing old or incorrect running shoes that have lost their shock-absorbing abilities may contribute to stress fractures.

• #23 Stress Fractures: Symptoms, Causes & Treatment

  https://my.clevelandclinic.org/health/diseases/15841-stress-fractures

  Stress fractures start as inflammation on a bones surface (healthcare providers call this a stress reaction). Stress reactions are like deep bone bruises. If something keeps putting pressure on that same spot before the stress reaction can heal, your bone can crack and create a stress fracture. […] Some of the most common causes of stress fractures include: Practicing or training too often without resting enough. Starting a new sport or physical activity without the right training, guidance or equipment. Quickly increasing your activity level (suddenly ramping up workouts, training or other physical activity). Changing the surface you train or work on (switching from running on an indoor track to road running, or starting a job that requires you to stand on a hard floor like concrete). Working or training without proper equipment. Specializing in one sport too early (children who play the same sport year-round without a break between seasons are more likely to experience a stress fracture than kids who play a variety of sports).

• #24 Stress Fractures – StatPearls – NCBI Bookshelf

  https://www.ncbi.nlm.nih.gov/books/NBK554538/

  Stress fractures occur when bone, typically in the lower extremities, is subjected to repeated mechanical stress that results in microscopic fractures. […] Stress fractures are due to an abrupt increase in activity or training patterns. There are intrinsic and extrinsic factors contributing to the development of the injury, with the bulk of the information coming from studies on military personnel. […] Intrinsic factors include poor physical conditioning, female, hormonal disorder, menstrual disorder, poor bone density, reduced muscle mass, genu valgum knees, and a short leg. Extrinsic factors include high-impact sports activities like running, jumping, abrupt increase in physical activity, irregular or angled running surface, poor footwear, running shoe wear older than 6 months, deficient vitamin D and calcium, and smoking.

• #25 Stress Fractures of the Foot and Ankle – OrthoInfo – AAOS

  https://orthoinfo.aaos.org/en/diseases–conditions/stress-fractures-of-the-foot-and-ankle/

  Doing „too much, too soon” is a common cause of stress fracture. […] Anything that alters the mechanics of how your foot absorbs impact as it strikes the ground may increase your risk for a stress fracture. […] A change in training or playing surface can increase the risk for stress fracture. […] Wearing worn or flimsy shoes that have lost their shock-absorbing ability may contribute to stress fractures.

• #26 Causes and Risk Factors of Foot Stress Fractures

  https://www.sports-health.com/sports-injuries/ankle-and-foot-injuries/causes-and-risk-factors-foot-stress-fractures

  Improper footwear. Shoes that are ill-fitting, too flimsy, stiff, or worn can contribute to a stress fracture. […] Osteoporosis decreases bone density, elevating the risk of foot stress fractures. […] Certain factors increase the likelihood of developing a foot stress fracture. […] Participation in certain sports. Participation in high-impact sports, such as running, soccer, basketball, and dance increase the likelihood of sustaining a stress fracture in the foot. […] Bone insufficiency. Osteoporosis and low levels of vitamin D can decrease bone density and strength, which may result in the increased chance of experiencing a foot stress fracture. […] Female sex. Female athletes are at an increased risk of developing foot stress fractures. This may be due to a number of factors including, female biomechanics, nutrition, and hormone levels. Additionally, female athletes with absent or irregular menstrual periods may be at an even higher risk of experiencing a foot stress fracture. […] Previous stress fracture. Having a previous foot stress fracture increases the chances of developing another in the same foot.

• #27 Stress Fracture Causes

  https://www.sports-health.com/sports-injuries/general-injuries/stress-fracture-causes

  Athletes who lack the athletic conditioning to take on a certain level of sports activity or overdo it in a single sport may develop stress fractures, due to lack of cross-training. […] Athletes who expect to return to their peak-season level of conditioning after the off-season risk developing stress fractures. […] Year-round athletes who do not change sports with each passing season may develop stress fractures, especially during the childhood and adolescent years. […] Playing sports with old, worn-out equipment, ill-fitting equipment, or no equipment at all can result in stress fractures. […] Athletes who do not follow established techniques when playing their sport can develop stress fractures. […] Early-onset osteoporosis in adolescent girls and/or elite female athletes related to high levels of athletic intensity and poor nutrition can cause stress fractures.

• #28 Stress Fractures – StatPearls – NCBI Bookshelf

  https://www.ncbi.nlm.nih.gov/books/NBK554538/

  Stress fractures occur when bone, typically in the lower extremities, is subjected to repeated mechanical stress that results in microscopic fractures. […] Stress fractures are due to an abrupt increase in activity or training patterns. There are intrinsic and extrinsic factors contributing to the development of the injury, with the bulk of the information coming from studies on military personnel. […] Intrinsic factors include poor physical conditioning, female, hormonal disorder, menstrual disorder, poor bone density, reduced muscle mass, genu valgum knees, and a short leg. Extrinsic factors include high-impact sports activities like running, jumping, abrupt increase in physical activity, irregular or angled running surface, poor footwear, running shoe wear older than 6 months, deficient vitamin D and calcium, and smoking.

• #29 Stress Fractures – StatPearls – NCBI Bookshelf

  https://www.ncbi.nlm.nih.gov/books/NBK554538/

  Stress fractures occur when bone, typically in the lower extremities, is subjected to repeated mechanical stress that results in microscopic fractures. […] Stress fractures are due to an abrupt increase in activity or training patterns. There are intrinsic and extrinsic factors contributing to the development of the injury, with the bulk of the information coming from studies on military personnel. […] Intrinsic factors include poor physical conditioning, female, hormonal disorder, menstrual disorder, poor bone density, reduced muscle mass, genu valgum knees, and a short leg. Extrinsic factors include high-impact sports activities like running, jumping, abrupt increase in physical activity, irregular or angled running surface, poor footwear, running shoe wear older than 6 months, deficient vitamin D and calcium, and smoking.

• #30 Causes of Higher Risk of Stress Fractures in Female Runners

  https://www.jefferson.edu/about/news-and-events/2020/8/causes-of-higher-risk-of-stress-fractures-in-female-runners.html

  A pair of new studies identify overlooked physiological factors and lack of knowledge around wellness as contributors to risk of stress fracture in women who run. […] Women, however, are at least twice as likely as men to develop stress fractures, an injury that impacts around 20% of runners. […] The two studies aimed to assess what contributed to risk of stress fractures, from the physiological, such as – bone structure and density, muscle mass, hormonal status, to ones influenced by training routine, such as training intensity, nutrition, insufficient strengthening, and ignoring pain. […] The researchers found that while there was no difference in estradiol hormone levels between the two groups, women who had a stress fracture history reported menstrual changes or irregular periods as a result of their training, or during peak training times.

• #31 Stress Fractures: Etiology, Epidemiology, Diagnosis, Treatment, and Prevention – PubMed

  https://pubmed.ncbi.nlm.nih.gov/28599045/

  Stress fractures are part of a continuum of changes in healthy bones in response to repeated mechanical deformation from physical activity. If the activity produces excessive repetitive stress, osteoclastic processes in the bone may proceed at a faster pace than osteoblastic processes, thus weakening the bone and augmenting susceptibility to stress fractures. […] Well-documented risk factors include female sex, white ethnicity, older age, taller stature, lower aerobic fitness, prior physical inactivity, greater amounts of current physical training, thinner bones, cigarette smoking, and inadequate intake of vitamin D and/or calcium. […] A sudden increase in the volume of physical activity along with other risk factors is often reported.

• #32 Stress Fractures: Practice Essentials, Pathophysiology, Etiology

  https://emedicine.medscape.com/article/1270244-overview

  Nattiv and Armsey found that genetics, female sex, White ethnicity, low body weight, lack of weightbearing exercise, intrinsic and extrinsic mechanical factors, amenorrhea, oligomenorrhea, inadequate calcium and caloric intake, and disordered eating were additional risk factors for stress fractures. […] A decreased testosterone level in male endurance athletes has also been implicated as a risk factor for stress fractures. […] Individuals found to have low bone mass and hormonal disturbances may require endocrinologic management. […] Schnackenburg et al did a matched control study on 19 female athletes with tibial stress fractures and found that patients with stress fractures had lower tibial cross-sectional area, lower trabecular bone mineral density (BMD), and less cortical area, as well as decreased knee extension strength. They suggested that impaired bone quality of the posterior cortex and decreased muscle strength were associated with stress fractures in female athletes.

• #33 Stress Fractures – StatPearls – NCBI Bookshelf

  https://www.ncbi.nlm.nih.gov/books/NBK554538/

  Stress fractures occur when bone, typically in the lower extremities, is subjected to repeated mechanical stress that results in microscopic fractures. […] Stress fractures are due to an abrupt increase in activity or training patterns. There are intrinsic and extrinsic factors contributing to the development of the injury, with the bulk of the information coming from studies on military personnel. […] Intrinsic factors include poor physical conditioning, female, hormonal disorder, menstrual disorder, poor bone density, reduced muscle mass, genu valgum knees, and a short leg. Extrinsic factors include high-impact sports activities like running, jumping, abrupt increase in physical activity, irregular or angled running surface, poor footwear, running shoe wear older than 6 months, deficient vitamin D and calcium, and smoking.

• #34 Stress Fractures: Causes, Symptoms, and Recovery | The Bone & Joint Center

  https://www.bone-joint.com/stress-fractures-causes-symptoms-and-recovery/

  Several factors can increase your risk of developing a stress fracture. These include: […] Stress fractures are more common in people who participate in high-impact sports, such as track and field, basketball, tennis, dance, or gymnastics. These sports involve repetitive impact activities that can put excessive stress on the bones. […] Individuals who suddenly shift from a sedentary lifestyle to an active training regimen or those who rapidly increase the intensity, duration, or frequency of their training sessions are more likely to develop a stress fracture. This is because their bones may not have enough time to adapt to the increased stress levels. […] Women, particularly those with abnormal or absent menstrual periods, are at higher risk of developing stress fractures. Hormonal changes and lower bone density associated with irregular menstrual cycles can contribute to this increased risk.

• #35 Stress Fractures: Diagnosis, Treatment, and Prevention | AAFP

  https://www.aafp.org/pubs/afp/issues/2011/0101/p39.html

  Poor nutrition and lifestyle habits may increase the risk of stress fracture. One study found lower 25-hydroxyvitamin D levels in Finnish male military recruits with stress fractures. […] Women with the female athlete triad (i.e., eating disorders, functional hypothalamic amenorrhea, and osteoporosis) are at higher risk of stress fracture. […] A study of female military recruits demonstrated an increased risk of stress fracture with a history of smoking, exercising less than three times per week, and consuming more than 10 alcoholic drinks per week before the start of basic training. […] Certain stress fractures may lead to complications, including progression to complete fractures, development of avascular necrosis, or delays in healing or nonunion. Examples of these high-risk stress fractures include the superolateral femoral neck, patella, anterior tibia, medial malleolus, talus, tarsal navicular, and the fifth metatarsal.

• #36 Stress Fractures – StatPearls – NCBI Bookshelf

  https://www.ncbi.nlm.nih.gov/books/NBK554538/

  Stress fractures occur when bone, typically in the lower extremities, is subjected to repeated mechanical stress that results in microscopic fractures. […] Stress fractures are due to an abrupt increase in activity or training patterns. There are intrinsic and extrinsic factors contributing to the development of the injury, with the bulk of the information coming from studies on military personnel. […] Intrinsic factors include poor physical conditioning, female, hormonal disorder, menstrual disorder, poor bone density, reduced muscle mass, genu valgum knees, and a short leg. Extrinsic factors include high-impact sports activities like running, jumping, abrupt increase in physical activity, irregular or angled running surface, poor footwear, running shoe wear older than 6 months, deficient vitamin D and calcium, and smoking.

• #37 Causes of Higher Risk of Stress Fractures in Female Runners

  https://www.jefferson.edu/about/news-and-events/2020/8/causes-of-higher-risk-of-stress-fractures-in-female-runners.html

  They also found through the DXA testing that women with a history of stress fractures had lower hip bone mineral density compared to women with no history of stress fractures, indicating decreased bone strength that could increase risk of injury. […] While the link between menstrual changes and bone strength is unclear, our findings also indicate that asking female runners about any menstrual irregularities during heavier training times is important during routine screening. […] Specifically, compared to women without stress fractures, women with histories of stress fractures had increased their training load more quickly. […] Also, while they knew of the importance of nutrition and strengthening exercises, women with a history of stress fracture more often reported not having or making the time for a balanced diet and proper cross-training to complement their running regimen.

• #38 Stress Fractures – StatPearls – NCBI Bookshelf

  https://www.ncbi.nlm.nih.gov/books/NBK554538/

  Stress fractures occur when bone, typically in the lower extremities, is subjected to repeated mechanical stress that results in microscopic fractures. […] Stress fractures are due to an abrupt increase in activity or training patterns. There are intrinsic and extrinsic factors contributing to the development of the injury, with the bulk of the information coming from studies on military personnel. […] Intrinsic factors include poor physical conditioning, female, hormonal disorder, menstrual disorder, poor bone density, reduced muscle mass, genu valgum knees, and a short leg. Extrinsic factors include high-impact sports activities like running, jumping, abrupt increase in physical activity, irregular or angled running surface, poor footwear, running shoe wear older than 6 months, deficient vitamin D and calcium, and smoking.

• #39 Stress Fractures: Practice Essentials, Pathophysiology, Etiology

  https://emedicine.medscape.com/article/1270244-overview

  Nattiv and Armsey found that genetics, female sex, White ethnicity, low body weight, lack of weightbearing exercise, intrinsic and extrinsic mechanical factors, amenorrhea, oligomenorrhea, inadequate calcium and caloric intake, and disordered eating were additional risk factors for stress fractures. […] A decreased testosterone level in male endurance athletes has also been implicated as a risk factor for stress fractures. […] Individuals found to have low bone mass and hormonal disturbances may require endocrinologic management. […] Schnackenburg et al did a matched control study on 19 female athletes with tibial stress fractures and found that patients with stress fractures had lower tibial cross-sectional area, lower trabecular bone mineral density (BMD), and less cortical area, as well as decreased knee extension strength. They suggested that impaired bone quality of the posterior cortex and decreased muscle strength were associated with stress fractures in female athletes.

• #40 Stress Fractures: Causes, Symptoms, and Recovery | The Bone & Joint Center

  https://www.bone-joint.com/stress-fractures-causes-symptoms-and-recovery/

  People with flat feet or high, rigid arches are more prone to stress fractures. These foot structures can alter the distribution of stress across the foot. […] Conditions that weaken the bones, such as osteoporosis, can make it easier for stress fractures to occur. Weaker bones are less able to withstand normal levels of force and impact, making them more susceptible to injury. […] If you’ve had one or more stress fractures in the past, you’re at higher risk of having more. This could be due to structural or biomechanical issues that make your bones more vulnerable to stress. […] Eating disorders and lack of essential nutrients like vitamin D and calcium can weaken bones, making them more likely to develop stress fractures. These nutrients are crucial for bone health and strength, and a deficiency can affect the bone remodeling process.

• #41 Causes and Risk Factors of Foot Stress Fractures

  https://www.sports-health.com/sports-injuries/ankle-and-foot-injuries/causes-and-risk-factors-foot-stress-fractures

  Improper footwear. Shoes that are ill-fitting, too flimsy, stiff, or worn can contribute to a stress fracture. […] Osteoporosis decreases bone density, elevating the risk of foot stress fractures. […] Certain factors increase the likelihood of developing a foot stress fracture. […] Participation in certain sports. Participation in high-impact sports, such as running, soccer, basketball, and dance increase the likelihood of sustaining a stress fracture in the foot. […] Bone insufficiency. Osteoporosis and low levels of vitamin D can decrease bone density and strength, which may result in the increased chance of experiencing a foot stress fracture. […] Female sex. Female athletes are at an increased risk of developing foot stress fractures. This may be due to a number of factors including, female biomechanics, nutrition, and hormone levels. Additionally, female athletes with absent or irregular menstrual periods may be at an even higher risk of experiencing a foot stress fracture. […] Previous stress fracture. Having a previous foot stress fracture increases the chances of developing another in the same foot.

• #42 Stress Fractures and Risk Factors | NGPG

  https://www.ngpg.org/stress-fractures-and-risk-factors

  A stress fracture is an overuse injury to a bone. An overuse injury is a type of injury that develops gradually over a period of time rather than at one specific time. […] There are multiple factors that increase the risk of a stress fracture: […] Intrinsic factors, which are characteristics of the individual, include weakness of the bones and muscles, abnormal alignment of the legs and feet, hormonal or menstrual irregularities, and dietary deficiencies of Vitamin D, calcium, or calories. […] Extrinsic factors, which are outside the individual and may include training errors such as too much activity, too hard or uneven surfaces, and improper footwear. […] Stress fractures can be classified as either low risk / faster healing type or high risk / slower healing type. Low risk stress fractures usually heal well by avoiding high impact activity for 4-8 weeks. High risk fractures do not heal well due to poor blood supply to the bone around the fracture or the amount of stress placed on the bone during normal daily activities. […] Another high risk stress fracture that occurs in the inner side of the midfoot is a navicular stress fracture. […] A high risk stress fracture in a metatarsal is a 5th metatarsal proximal shaft fracture which causes pain and swelling on the outside of the foot.

• #43 Stress Fractures

  https://www.webmd.com/a-to-z-guides/stress-fractures-treatment

  Any anatomical abnormalities — like fallen arches — can distribute stress unequally through the feet and legs. This raises the risk of stress fractures. So can poor-quality equipment, like worn-out running shoes. […] Stress fractures often happen in people who have dramatically raised their level of physical activity. So to prevent them, go slowly. Experts recommend that you never increase your exercise intensity by more than 10% per week.

• #44 Stress Fractures – StatPearls – NCBI Bookshelf

  https://www.ncbi.nlm.nih.gov/books/NBK554538/

  Stress fractures occur when bone, typically in the lower extremities, is subjected to repeated mechanical stress that results in microscopic fractures. […] Stress fractures are due to an abrupt increase in activity or training patterns. There are intrinsic and extrinsic factors contributing to the development of the injury, with the bulk of the information coming from studies on military personnel. […] Intrinsic factors include poor physical conditioning, female, hormonal disorder, menstrual disorder, poor bone density, reduced muscle mass, genu valgum knees, and a short leg. Extrinsic factors include high-impact sports activities like running, jumping, abrupt increase in physical activity, irregular or angled running surface, poor footwear, running shoe wear older than 6 months, deficient vitamin D and calcium, and smoking.

• #45 Stress Fractures – StatPearls – NCBI Bookshelf

  https://www.ncbi.nlm.nih.gov/books/NBK554538/

  Stress fractures occur when bone, typically in the lower extremities, is subjected to repeated mechanical stress that results in microscopic fractures. […] Stress fractures are due to an abrupt increase in activity or training patterns. There are intrinsic and extrinsic factors contributing to the development of the injury, with the bulk of the information coming from studies on military personnel. […] Intrinsic factors include poor physical conditioning, female, hormonal disorder, menstrual disorder, poor bone density, reduced muscle mass, genu valgum knees, and a short leg. Extrinsic factors include high-impact sports activities like running, jumping, abrupt increase in physical activity, irregular or angled running surface, poor footwear, running shoe wear older than 6 months, deficient vitamin D and calcium, and smoking.

• #46 Stress Fractures: Practice Essentials, Pathophysiology, Etiology

  https://emedicine.medscape.com/article/1270244-overview

  The three factors that can predispose an individual to the development of stress fractures are as follows: Increase in the applied load, Increase in the number of applied stresses, Decrease in the surface area of the applied load. […] Although stress fractures result from repeated loading, the exact contribution of training factors (eg, volume, intensity, and surface) has not been clearly established. From what we do know, menstrual disturbances, caloric restriction, decreased bone density, muscle weakness, and leg-length differences are risk factors for stress fractures. […] Myburgh reported that stress fractures were more common in athletes who had decreased bone density, lower dietary calcium intake, current menstrual irregularity, and less oral contraceptive use, when the athletes were matched for similar training volume and intensity.

• #47 Stress Fractures: Causes, Symptoms, and Recovery | The Bone & Joint Center

  https://www.bone-joint.com/stress-fractures-causes-symptoms-and-recovery/

  People with flat feet or high, rigid arches are more prone to stress fractures. These foot structures can alter the distribution of stress across the foot. […] Conditions that weaken the bones, such as osteoporosis, can make it easier for stress fractures to occur. Weaker bones are less able to withstand normal levels of force and impact, making them more susceptible to injury. […] If you’ve had one or more stress fractures in the past, you’re at higher risk of having more. This could be due to structural or biomechanical issues that make your bones more vulnerable to stress. […] Eating disorders and lack of essential nutrients like vitamin D and calcium can weaken bones, making them more likely to develop stress fractures. These nutrients are crucial for bone health and strength, and a deficiency can affect the bone remodeling process.

• #48 Common Stress Fractures | AAFP

  https://www.aafp.org/pubs/afp/issues/2003/1015/p1527.html

  Stress fractures often occur in nonathletes or deconditioned persons who begin a new exercise program, such as military recruits. […] Women are generally more likely to develop stress fractures than men. […] In both men and women, stress fractures tend to recur. Approximately 60 percent of persons with a stress fracture have had a previous stress fracture. […] Stress fractures of the lower extremity most commonly involve the tibia and metatarsal bones. […] Stress fractures of the fibula, the navicula, the pelvis, and the femoral neck of the femur are less common. […] Tibial fractures are the most common lower extremity stress fracture, accounting for approximately one half of all stress fractures in children and adults. […] Metatarsal fractures represent approximately 25 percent of stress fractures.

• #49 Stress Fractures – StatPearls – NCBI Bookshelf

  https://www.ncbi.nlm.nih.gov/books/NBK554538/

  Stress fractures occur when bone, typically in the lower extremities, is subjected to repeated mechanical stress that results in microscopic fractures. […] Stress fractures are due to an abrupt increase in activity or training patterns. There are intrinsic and extrinsic factors contributing to the development of the injury, with the bulk of the information coming from studies on military personnel. […] Intrinsic factors include poor physical conditioning, female, hormonal disorder, menstrual disorder, poor bone density, reduced muscle mass, genu valgum knees, and a short leg. Extrinsic factors include high-impact sports activities like running, jumping, abrupt increase in physical activity, irregular or angled running surface, poor footwear, running shoe wear older than 6 months, deficient vitamin D and calcium, and smoking.

• #50 Stress Fractures: Etiology, Epidemiology, Diagnosis, Treatment, and Prevention – PubMed

  https://pubmed.ncbi.nlm.nih.gov/28599045/

  Stress fractures are part of a continuum of changes in healthy bones in response to repeated mechanical deformation from physical activity. If the activity produces excessive repetitive stress, osteoclastic processes in the bone may proceed at a faster pace than osteoblastic processes, thus weakening the bone and augmenting susceptibility to stress fractures. […] Well-documented risk factors include female sex, white ethnicity, older age, taller stature, lower aerobic fitness, prior physical inactivity, greater amounts of current physical training, thinner bones, cigarette smoking, and inadequate intake of vitamin D and/or calcium. […] A sudden increase in the volume of physical activity along with other risk factors is often reported.

• #51 Stress Fractures: Causes, Symptoms, and Recovery | The Bone & Joint Center

  https://www.bone-joint.com/stress-fractures-causes-symptoms-and-recovery/

  People with flat feet or high, rigid arches are more prone to stress fractures. These foot structures can alter the distribution of stress across the foot. […] Conditions that weaken the bones, such as osteoporosis, can make it easier for stress fractures to occur. Weaker bones are less able to withstand normal levels of force and impact, making them more susceptible to injury. […] If you’ve had one or more stress fractures in the past, you’re at higher risk of having more. This could be due to structural or biomechanical issues that make your bones more vulnerable to stress. […] Eating disorders and lack of essential nutrients like vitamin D and calcium can weaken bones, making them more likely to develop stress fractures. These nutrients are crucial for bone health and strength, and a deficiency can affect the bone remodeling process.

• #52 Stress Fractures: Etiology, Epidemiology, Diagnosis, Treatment, and Prevention – PubMed

  https://pubmed.ncbi.nlm.nih.gov/28599045/

  Stress fractures are part of a continuum of changes in healthy bones in response to repeated mechanical deformation from physical activity. If the activity produces excessive repetitive stress, osteoclastic processes in the bone may proceed at a faster pace than osteoblastic processes, thus weakening the bone and augmenting susceptibility to stress fractures. […] Well-documented risk factors include female sex, white ethnicity, older age, taller stature, lower aerobic fitness, prior physical inactivity, greater amounts of current physical training, thinner bones, cigarette smoking, and inadequate intake of vitamin D and/or calcium. […] A sudden increase in the volume of physical activity along with other risk factors is often reported.

• #53 Stress Fractures: Practice Essentials, Pathophysiology, Etiology

  https://emedicine.medscape.com/article/1270244-overview

  Giladi identified two anatomic risk factors in military recruits. Recruits with stress fractures had significantly narrower tibiae and increased external rotation of the hip. These two variables were independent and cumulative, and when both risk factors were present, morbidity associated with stress fracture was 45%. […] In a nationwide database analysis, Kale et al identified age and female sex as important risk factors for stress fractures.

• #54 Stress Fractures: Etiology, Epidemiology, Diagnosis, Treatment, and Prevention – PubMed

  https://pubmed.ncbi.nlm.nih.gov/28599045/

  Stress fractures are part of a continuum of changes in healthy bones in response to repeated mechanical deformation from physical activity. If the activity produces excessive repetitive stress, osteoclastic processes in the bone may proceed at a faster pace than osteoblastic processes, thus weakening the bone and augmenting susceptibility to stress fractures. […] Well-documented risk factors include female sex, white ethnicity, older age, taller stature, lower aerobic fitness, prior physical inactivity, greater amounts of current physical training, thinner bones, cigarette smoking, and inadequate intake of vitamin D and/or calcium. […] A sudden increase in the volume of physical activity along with other risk factors is often reported.

• #55 Stress Fractures – StatPearls – NCBI Bookshelf

  https://www.ncbi.nlm.nih.gov/books/NBK554538/

  Stress fractures occur when bone, typically in the lower extremities, is subjected to repeated mechanical stress that results in microscopic fractures. […] Stress fractures are due to an abrupt increase in activity or training patterns. There are intrinsic and extrinsic factors contributing to the development of the injury, with the bulk of the information coming from studies on military personnel. […] Intrinsic factors include poor physical conditioning, female, hormonal disorder, menstrual disorder, poor bone density, reduced muscle mass, genu valgum knees, and a short leg. Extrinsic factors include high-impact sports activities like running, jumping, abrupt increase in physical activity, irregular or angled running surface, poor footwear, running shoe wear older than 6 months, deficient vitamin D and calcium, and smoking.

• #56 Stress Fractures: Causes, Symptoms, and Recovery | The Bone & Joint Center

  https://www.bone-joint.com/stress-fractures-causes-symptoms-and-recovery/

  Several factors can increase your risk of developing a stress fracture. These include: […] Stress fractures are more common in people who participate in high-impact sports, such as track and field, basketball, tennis, dance, or gymnastics. These sports involve repetitive impact activities that can put excessive stress on the bones. […] Individuals who suddenly shift from a sedentary lifestyle to an active training regimen or those who rapidly increase the intensity, duration, or frequency of their training sessions are more likely to develop a stress fracture. This is because their bones may not have enough time to adapt to the increased stress levels. […] Women, particularly those with abnormal or absent menstrual periods, are at higher risk of developing stress fractures. Hormonal changes and lower bone density associated with irregular menstrual cycles can contribute to this increased risk.

• #57 Stress Fractures: Etiology, Epidemiology, Diagnosis, Treatment, and Prevention – PubMed

  https://pubmed.ncbi.nlm.nih.gov/28599045/

  Stress fractures are part of a continuum of changes in healthy bones in response to repeated mechanical deformation from physical activity. If the activity produces excessive repetitive stress, osteoclastic processes in the bone may proceed at a faster pace than osteoblastic processes, thus weakening the bone and augmenting susceptibility to stress fractures. […] Well-documented risk factors include female sex, white ethnicity, older age, taller stature, lower aerobic fitness, prior physical inactivity, greater amounts of current physical training, thinner bones, cigarette smoking, and inadequate intake of vitamin D and/or calcium. […] A sudden increase in the volume of physical activity along with other risk factors is often reported.

• #58 Stress Fractures: Etiology, Epidemiology, Diagnosis, Treatment, and Prevention – PubMed

  https://pubmed.ncbi.nlm.nih.gov/28599045/

  Stress fractures are part of a continuum of changes in healthy bones in response to repeated mechanical deformation from physical activity. If the activity produces excessive repetitive stress, osteoclastic processes in the bone may proceed at a faster pace than osteoblastic processes, thus weakening the bone and augmenting susceptibility to stress fractures. […] Well-documented risk factors include female sex, white ethnicity, older age, taller stature, lower aerobic fitness, prior physical inactivity, greater amounts of current physical training, thinner bones, cigarette smoking, and inadequate intake of vitamin D and/or calcium. […] A sudden increase in the volume of physical activity along with other risk factors is often reported.

• #59 Stress Fractures – StatPearls – NCBI Bookshelf

  https://www.ncbi.nlm.nih.gov/books/NBK554538/

  Stress fractures occur when bone, typically in the lower extremities, is subjected to repeated mechanical stress that results in microscopic fractures. […] Stress fractures are due to an abrupt increase in activity or training patterns. There are intrinsic and extrinsic factors contributing to the development of the injury, with the bulk of the information coming from studies on military personnel. […] Intrinsic factors include poor physical conditioning, female, hormonal disorder, menstrual disorder, poor bone density, reduced muscle mass, genu valgum knees, and a short leg. Extrinsic factors include high-impact sports activities like running, jumping, abrupt increase in physical activity, irregular or angled running surface, poor footwear, running shoe wear older than 6 months, deficient vitamin D and calcium, and smoking.

• #60 Stress Fractures – StatPearls – NCBI Bookshelf

  https://www.ncbi.nlm.nih.gov/books/NBK554538/

  The most common risk factor is an abrupt increase in activity. […] In general, with male and female athletes participating in the same training regime, female athletes have a higher incidence of stress fractures. […] The most common sites for stress fractures are as follows in decreasing order metatarsals, tibia, tarsals, femur, and fibula, followed by the pelvis. […] Some stress fractures are more common in specific sports. […] Stress fractures account for about 20% of all sports medicine injuries, and runners who average more than 25 miles a week are considered high risk. […] In addition to the intrinsic and extrinsic factors already noted, there are additional factors influencing stress fracture development. […] Another factor influencing stress fracture development is overtraining, or a more current name would be relative energy deficiency syndrome. […] Vitamin D is another potential factor influencing the development of stress fractures.

• #61 Stress fractures: Understanding this common overuse injury| Healthy You

  https://www.riversideonline.com/en/patients-and-visitors/healthy-you-blog/blog/s/what-is-a-stress-fracture-causes-symptoms-and-treatment-explained

  Stress fractures are one of the most common injuries in sports. They often happen to athletes or anyone who exercises a lot, especially in activities that involve repeated impact to the legs and feet. […] A stress fracture happens when bones get worn down by repetitive force, usually over time. These small injuries are often caused by overuse, such as running long distances, jumping repeatedly or suddenly increasing your activity level. […] Many things can increase the risk of a stress fracture, including exercising too much without enough rest, suddenly increasing your activity level, running more than 25 miles per week, poor technique or alignment during exercise, old or worn out footwear, not eating enough to support your activity, osteopenia or osteoporosis, which make bones weaker, and smoking or drinking more than 10 alcoholic drinks per week. […] Women are at higher risk, especially if they have low bone density, hormone imbalances, or poor nutrition. These factors are often linked to a condition called Relative Energy Deficiency in Sport (RED-S).

• #62 Stress Fractures: Diagnosis, Treatment, and Prevention | AAFP

  https://www.aafp.org/pubs/afp/issues/2011/0101/p39.html

  Poor nutrition and lifestyle habits may increase the risk of stress fracture. One study found lower 25-hydroxyvitamin D levels in Finnish male military recruits with stress fractures. […] Women with the female athlete triad (i.e., eating disorders, functional hypothalamic amenorrhea, and osteoporosis) are at higher risk of stress fracture. […] A study of female military recruits demonstrated an increased risk of stress fracture with a history of smoking, exercising less than three times per week, and consuming more than 10 alcoholic drinks per week before the start of basic training. […] Certain stress fractures may lead to complications, including progression to complete fractures, development of avascular necrosis, or delays in healing or nonunion. Examples of these high-risk stress fractures include the superolateral femoral neck, patella, anterior tibia, medial malleolus, talus, tarsal navicular, and the fifth metatarsal.

• #63 Stress Fractures: Etiology, Epidemiology, Diagnosis, Treatment, and Prevention – PubMed

  https://pubmed.ncbi.nlm.nih.gov/28599045/

  Stress fractures are part of a continuum of changes in healthy bones in response to repeated mechanical deformation from physical activity. If the activity produces excessive repetitive stress, osteoclastic processes in the bone may proceed at a faster pace than osteoblastic processes, thus weakening the bone and augmenting susceptibility to stress fractures. […] Well-documented risk factors include female sex, white ethnicity, older age, taller stature, lower aerobic fitness, prior physical inactivity, greater amounts of current physical training, thinner bones, cigarette smoking, and inadequate intake of vitamin D and/or calcium. […] A sudden increase in the volume of physical activity along with other risk factors is often reported.

• #64 Stress Fractures: Diagnosis, Treatment, and Prevention | AAFP

  https://www.aafp.org/pubs/afp/issues/2011/0101/p39.html

  Poor nutrition and lifestyle habits may increase the risk of stress fracture. One study found lower 25-hydroxyvitamin D levels in Finnish male military recruits with stress fractures. […] Women with the female athlete triad (i.e., eating disorders, functional hypothalamic amenorrhea, and osteoporosis) are at higher risk of stress fracture. […] A study of female military recruits demonstrated an increased risk of stress fracture with a history of smoking, exercising less than three times per week, and consuming more than 10 alcoholic drinks per week before the start of basic training. […] Certain stress fractures may lead to complications, including progression to complete fractures, development of avascular necrosis, or delays in healing or nonunion. Examples of these high-risk stress fractures include the superolateral femoral neck, patella, anterior tibia, medial malleolus, talus, tarsal navicular, and the fifth metatarsal.

• #65 Stress fractures: Understanding this common overuse injury| Healthy You

  https://www.riversideonline.com/en/patients-and-visitors/healthy-you-blog/blog/s/what-is-a-stress-fracture-causes-symptoms-and-treatment-explained

  Stress fractures are one of the most common injuries in sports. They often happen to athletes or anyone who exercises a lot, especially in activities that involve repeated impact to the legs and feet. […] A stress fracture happens when bones get worn down by repetitive force, usually over time. These small injuries are often caused by overuse, such as running long distances, jumping repeatedly or suddenly increasing your activity level. […] Many things can increase the risk of a stress fracture, including exercising too much without enough rest, suddenly increasing your activity level, running more than 25 miles per week, poor technique or alignment during exercise, old or worn out footwear, not eating enough to support your activity, osteopenia or osteoporosis, which make bones weaker, and smoking or drinking more than 10 alcoholic drinks per week. […] Women are at higher risk, especially if they have low bone density, hormone imbalances, or poor nutrition. These factors are often linked to a condition called Relative Energy Deficiency in Sport (RED-S).

• #66 Stress Fractures: Diagnosis, Treatment, and Prevention | AAFP

  https://www.aafp.org/pubs/afp/issues/2011/0101/p39.html

  Poor nutrition and lifestyle habits may increase the risk of stress fracture. One study found lower 25-hydroxyvitamin D levels in Finnish male military recruits with stress fractures. […] Women with the female athlete triad (i.e., eating disorders, functional hypothalamic amenorrhea, and osteoporosis) are at higher risk of stress fracture. […] A study of female military recruits demonstrated an increased risk of stress fracture with a history of smoking, exercising less than three times per week, and consuming more than 10 alcoholic drinks per week before the start of basic training. […] Certain stress fractures may lead to complications, including progression to complete fractures, development of avascular necrosis, or delays in healing or nonunion. Examples of these high-risk stress fractures include the superolateral femoral neck, patella, anterior tibia, medial malleolus, talus, tarsal navicular, and the fifth metatarsal.

• #67 Common Causes of Stress Fractures – Orthopedic Associates of Long Island

  https://oali.com/common-causes-of-stress-fractures/

  Stress fractures can be painful and frustrating injuries. Unlike breaks and fractures from acute trauma, stress fractures happen slowly over time as the result of repetitive impact or strain. […] One major cause of stress fractures is wearing inappropriate footwear for your chosen activities. […] Stress fractures frequently happen when people rapidly increase their training regimen. […] Insufficient intake of vitamin D and calcium is also linked to a higher incidence of stress fractures, especially among female athletes. […] Other issues that raise stress fracture risks include muscle imbalances or weaknesses that alter gait biomechanics, menstrual disturbances like amenorrhea, which disrupt hormonal bone support, and underlying conditions that diminish bone density like osteopenia or osteoporosis.

• #68 Stress Fractures – StatPearls – NCBI Bookshelf

  https://www.ncbi.nlm.nih.gov/books/NBK554538/

  Stress fractures occur when bone, typically in the lower extremities, is subjected to repeated mechanical stress that results in microscopic fractures. […] Stress fractures are due to an abrupt increase in activity or training patterns. There are intrinsic and extrinsic factors contributing to the development of the injury, with the bulk of the information coming from studies on military personnel. […] Intrinsic factors include poor physical conditioning, female, hormonal disorder, menstrual disorder, poor bone density, reduced muscle mass, genu valgum knees, and a short leg. Extrinsic factors include high-impact sports activities like running, jumping, abrupt increase in physical activity, irregular or angled running surface, poor footwear, running shoe wear older than 6 months, deficient vitamin D and calcium, and smoking.

• #69

  https://www.runnersworld.com/uk/health/injury/a774656/stress-fractures/

  Your running form is also thought to potentially impact your likelihood of developing stress fractures at least in some cases. There does seem to be a link to tibial stress fractures with those who overstride, with a definite heel strike, says physiotherapist Neil Smith. […] Poor or insufficient nutrition can also put you at risk of stress fractures. Research published in The Journal of Foot Ankle Surgery reported that low levels of vitamin D may increase the risk and suggests that active individuals may need higher levels of it than the general population. […] If you’re a treadmill runner who suddenly shifts to doing all your miles on the road, or a trail runner who suddenly moves to tarmac, then this can also increase the risk of a stress fracture. […] Wearing old or incorrect running shoes that have lost their shock-absorbing abilities may contribute to stress fractures.

• #70 Stress Fractures – StatPearls – NCBI Bookshelf

  https://www.ncbi.nlm.nih.gov/books/NBK554538/

  Stress fractures occur when bone, typically in the lower extremities, is subjected to repeated mechanical stress that results in microscopic fractures. […] Stress fractures are due to an abrupt increase in activity or training patterns. There are intrinsic and extrinsic factors contributing to the development of the injury, with the bulk of the information coming from studies on military personnel. […] Intrinsic factors include poor physical conditioning, female, hormonal disorder, menstrual disorder, poor bone density, reduced muscle mass, genu valgum knees, and a short leg. Extrinsic factors include high-impact sports activities like running, jumping, abrupt increase in physical activity, irregular or angled running surface, poor footwear, running shoe wear older than 6 months, deficient vitamin D and calcium, and smoking.

• #71

  https://www.runnersworld.com/uk/health/injury/a774656/stress-fractures/

  Your running form is also thought to potentially impact your likelihood of developing stress fractures at least in some cases. There does seem to be a link to tibial stress fractures with those who overstride, with a definite heel strike, says physiotherapist Neil Smith. […] Poor or insufficient nutrition can also put you at risk of stress fractures. Research published in The Journal of Foot Ankle Surgery reported that low levels of vitamin D may increase the risk and suggests that active individuals may need higher levels of it than the general population. […] If you’re a treadmill runner who suddenly shifts to doing all your miles on the road, or a trail runner who suddenly moves to tarmac, then this can also increase the risk of a stress fracture. […] Wearing old or incorrect running shoes that have lost their shock-absorbing abilities may contribute to stress fractures.

• #72 „Why do I Keep Getting Stress Fractures?” – common causes of & ways to prevent stress fractures — Brianna Mason, Naturopathic Doctor

  https://www.ndbri.com/news-notes/why-do-i-keep-getting-stress-fractures

  As you may know, one of the most common causes of stress fractures is overuse however there are other causes that should be considered when assessing a stress fracture. […] Stress fractures begin when there is repetitive and excessive stress on the bone. This then causes an acceleration in the normal bone remodeling process, production of microfractures then subsequently a stress injury such as a stress reaction and finally a stress fracture occurs. […] There are a number of risk factors that can increase your risk of experiencing a stress fracture. Here are some factors that increase the risk of stress fractures that you can modify. […] High volume of physical activity without proper rest and recovery. […] Not consuming enough food to meet your body’s energy needs. […] Increasing exercise volume too quickly.

• #73 Causes of Higher Risk of Stress Fractures in Female Runners

  https://www.jefferson.edu/about/news-and-events/2020/8/causes-of-higher-risk-of-stress-fractures-in-female-runners.html

  They also found through the DXA testing that women with a history of stress fractures had lower hip bone mineral density compared to women with no history of stress fractures, indicating decreased bone strength that could increase risk of injury. […] While the link between menstrual changes and bone strength is unclear, our findings also indicate that asking female runners about any menstrual irregularities during heavier training times is important during routine screening. […] Specifically, compared to women without stress fractures, women with histories of stress fractures had increased their training load more quickly. […] Also, while they knew of the importance of nutrition and strengthening exercises, women with a history of stress fracture more often reported not having or making the time for a balanced diet and proper cross-training to complement their running regimen.

• #74 Stress Fractures: Diagnosis, Treatment, and Prevention | AAFP

  https://www.aafp.org/pubs/afp/issues/2011/0101/p39.html

  Poor nutrition and lifestyle habits may increase the risk of stress fracture. One study found lower 25-hydroxyvitamin D levels in Finnish male military recruits with stress fractures. […] Women with the female athlete triad (i.e., eating disorders, functional hypothalamic amenorrhea, and osteoporosis) are at higher risk of stress fracture. […] A study of female military recruits demonstrated an increased risk of stress fracture with a history of smoking, exercising less than three times per week, and consuming more than 10 alcoholic drinks per week before the start of basic training. […] Certain stress fractures may lead to complications, including progression to complete fractures, development of avascular necrosis, or delays in healing or nonunion. Examples of these high-risk stress fractures include the superolateral femoral neck, patella, anterior tibia, medial malleolus, talus, tarsal navicular, and the fifth metatarsal.

• #75

  https://www.runnersworld.com/uk/health/injury/a774656/stress-fractures/

  Your running form is also thought to potentially impact your likelihood of developing stress fractures at least in some cases. There does seem to be a link to tibial stress fractures with those who overstride, with a definite heel strike, says physiotherapist Neil Smith. […] Poor or insufficient nutrition can also put you at risk of stress fractures. Research published in The Journal of Foot Ankle Surgery reported that low levels of vitamin D may increase the risk and suggests that active individuals may need higher levels of it than the general population. […] If you’re a treadmill runner who suddenly shifts to doing all your miles on the road, or a trail runner who suddenly moves to tarmac, then this can also increase the risk of a stress fracture. […] Wearing old or incorrect running shoes that have lost their shock-absorbing abilities may contribute to stress fractures.

• #76 Stress Fractures: Practice Essentials, Pathophysiology, Etiology

  https://emedicine.medscape.com/article/1270244-overview

  Nattiv and Armsey found that genetics, female sex, White ethnicity, low body weight, lack of weightbearing exercise, intrinsic and extrinsic mechanical factors, amenorrhea, oligomenorrhea, inadequate calcium and caloric intake, and disordered eating were additional risk factors for stress fractures. […] A decreased testosterone level in male endurance athletes has also been implicated as a risk factor for stress fractures. […] Individuals found to have low bone mass and hormonal disturbances may require endocrinologic management. […] Schnackenburg et al did a matched control study on 19 female athletes with tibial stress fractures and found that patients with stress fractures had lower tibial cross-sectional area, lower trabecular bone mineral density (BMD), and less cortical area, as well as decreased knee extension strength. They suggested that impaired bone quality of the posterior cortex and decreased muscle strength were associated with stress fractures in female athletes.

• #77 Stress Fracture | Causes, Risk Factors, Diagnosis & Treatment

  https://www.cincinnatichildrens.org/health/s/stress-fracture

  A stress fracture is an injury to a bone caused by repeated stress to that bone. […] It is believed that most fatigue stress fractures are caused by too much stress applied too quickly for the bone to fully heal. […] Risk factors vary depending on age, gender and type of activity. In general, risk factors include: Poor / improper nutrition, Too much activity or increasing activity too quickly after time off, Improper rest, Combination of these risk factors, Females with irregular menstrual cycles are at an increased risk of a stress fracture.

• #78 Causes and Risk Factors of Foot Stress Fractures

  https://www.sports-health.com/sports-injuries/ankle-and-foot-injuries/causes-and-risk-factors-foot-stress-fractures

  Improper footwear. Shoes that are ill-fitting, too flimsy, stiff, or worn can contribute to a stress fracture. […] Osteoporosis decreases bone density, elevating the risk of foot stress fractures. […] Certain factors increase the likelihood of developing a foot stress fracture. […] Participation in certain sports. Participation in high-impact sports, such as running, soccer, basketball, and dance increase the likelihood of sustaining a stress fracture in the foot. […] Bone insufficiency. Osteoporosis and low levels of vitamin D can decrease bone density and strength, which may result in the increased chance of experiencing a foot stress fracture. […] Female sex. Female athletes are at an increased risk of developing foot stress fractures. This may be due to a number of factors including, female biomechanics, nutrition, and hormone levels. Additionally, female athletes with absent or irregular menstrual periods may be at an even higher risk of experiencing a foot stress fracture. […] Previous stress fracture. Having a previous foot stress fracture increases the chances of developing another in the same foot.

• #79 Stress Fracture Causes

  https://www.sports-health.com/sports-injuries/general-injuries/stress-fracture-causes

  Disordered eating and intense physical activity can suppress the hormones that control the menstrual cycle, a biochemical state similar to menopause that results in the lack of a regular menstrual periods. This can rob the bones of calcium, weakening them and increasing the chance of stress fractures.

• #80 Stress Fractures: Practice Essentials, Pathophysiology, Etiology

  https://emedicine.medscape.com/article/1270244-overview

  Nattiv and Armsey found that genetics, female sex, White ethnicity, low body weight, lack of weightbearing exercise, intrinsic and extrinsic mechanical factors, amenorrhea, oligomenorrhea, inadequate calcium and caloric intake, and disordered eating were additional risk factors for stress fractures. […] A decreased testosterone level in male endurance athletes has also been implicated as a risk factor for stress fractures. […] Individuals found to have low bone mass and hormonal disturbances may require endocrinologic management. […] Schnackenburg et al did a matched control study on 19 female athletes with tibial stress fractures and found that patients with stress fractures had lower tibial cross-sectional area, lower trabecular bone mineral density (BMD), and less cortical area, as well as decreased knee extension strength. They suggested that impaired bone quality of the posterior cortex and decreased muscle strength were associated with stress fractures in female athletes.

• #81 Stress Fractures – StatPearls – NCBI Bookshelf

  https://www.ncbi.nlm.nih.gov/books/NBK554538/

  The most common risk factor is an abrupt increase in activity. […] In general, with male and female athletes participating in the same training regime, female athletes have a higher incidence of stress fractures. […] The most common sites for stress fractures are as follows in decreasing order metatarsals, tibia, tarsals, femur, and fibula, followed by the pelvis. […] Some stress fractures are more common in specific sports. […] Stress fractures account for about 20% of all sports medicine injuries, and runners who average more than 25 miles a week are considered high risk. […] In addition to the intrinsic and extrinsic factors already noted, there are additional factors influencing stress fracture development. […] Another factor influencing stress fracture development is overtraining, or a more current name would be relative energy deficiency syndrome. […] Vitamin D is another potential factor influencing the development of stress fractures.

• #82 Stress fractures: Understanding this common overuse injury| Healthy You

  https://www.riversideonline.com/en/patients-and-visitors/healthy-you-blog/blog/s/what-is-a-stress-fracture-causes-symptoms-and-treatment-explained

  Stress fractures are one of the most common injuries in sports. They often happen to athletes or anyone who exercises a lot, especially in activities that involve repeated impact to the legs and feet. […] A stress fracture happens when bones get worn down by repetitive force, usually over time. These small injuries are often caused by overuse, such as running long distances, jumping repeatedly or suddenly increasing your activity level. […] Many things can increase the risk of a stress fracture, including exercising too much without enough rest, suddenly increasing your activity level, running more than 25 miles per week, poor technique or alignment during exercise, old or worn out footwear, not eating enough to support your activity, osteopenia or osteoporosis, which make bones weaker, and smoking or drinking more than 10 alcoholic drinks per week. […] Women are at higher risk, especially if they have low bone density, hormone imbalances, or poor nutrition. These factors are often linked to a condition called Relative Energy Deficiency in Sport (RED-S).

• #83 Stress Fractures: Practice Essentials, Pathophysiology, Etiology

  https://emedicine.medscape.com/article/1270244-overview

  Nattiv and Armsey found that genetics, female sex, White ethnicity, low body weight, lack of weightbearing exercise, intrinsic and extrinsic mechanical factors, amenorrhea, oligomenorrhea, inadequate calcium and caloric intake, and disordered eating were additional risk factors for stress fractures. […] A decreased testosterone level in male endurance athletes has also been implicated as a risk factor for stress fractures. […] Individuals found to have low bone mass and hormonal disturbances may require endocrinologic management. […] Schnackenburg et al did a matched control study on 19 female athletes with tibial stress fractures and found that patients with stress fractures had lower tibial cross-sectional area, lower trabecular bone mineral density (BMD), and less cortical area, as well as decreased knee extension strength. They suggested that impaired bone quality of the posterior cortex and decreased muscle strength were associated with stress fractures in female athletes.

• #84 Stress Fractures – StatPearls – NCBI Bookshelf

  https://www.ncbi.nlm.nih.gov/books/NBK554538/

  The most common risk factor is an abrupt increase in activity. […] In general, with male and female athletes participating in the same training regime, female athletes have a higher incidence of stress fractures. […] The most common sites for stress fractures are as follows in decreasing order metatarsals, tibia, tarsals, femur, and fibula, followed by the pelvis. […] Some stress fractures are more common in specific sports. […] Stress fractures account for about 20% of all sports medicine injuries, and runners who average more than 25 miles a week are considered high risk. […] In addition to the intrinsic and extrinsic factors already noted, there are additional factors influencing stress fracture development. […] Another factor influencing stress fracture development is overtraining, or a more current name would be relative energy deficiency syndrome. […] Vitamin D is another potential factor influencing the development of stress fractures.

• #85 Common Stress Fractures | AAFP

  https://www.aafp.org/pubs/afp/issues/2003/1015/p1527.html

  Stress fractures often occur in nonathletes or deconditioned persons who begin a new exercise program, such as military recruits. […] Women are generally more likely to develop stress fractures than men. […] In both men and women, stress fractures tend to recur. Approximately 60 percent of persons with a stress fracture have had a previous stress fracture. […] Stress fractures of the lower extremity most commonly involve the tibia and metatarsal bones. […] Stress fractures of the fibula, the navicula, the pelvis, and the femoral neck of the femur are less common. […] Tibial fractures are the most common lower extremity stress fracture, accounting for approximately one half of all stress fractures in children and adults. […] Metatarsal fractures represent approximately 25 percent of stress fractures.

• #86 Common Stress Fractures | AAFP

  https://www.aafp.org/pubs/afp/issues/2003/1015/p1527.html

  Stress fractures often occur in nonathletes or deconditioned persons who begin a new exercise program, such as military recruits. […] Women are generally more likely to develop stress fractures than men. […] In both men and women, stress fractures tend to recur. Approximately 60 percent of persons with a stress fracture have had a previous stress fracture. […] Stress fractures of the lower extremity most commonly involve the tibia and metatarsal bones. […] Stress fractures of the fibula, the navicula, the pelvis, and the femoral neck of the femur are less common. […] Tibial fractures are the most common lower extremity stress fracture, accounting for approximately one half of all stress fractures in children and adults. […] Metatarsal fractures represent approximately 25 percent of stress fractures.

• #87 Common Stress Fractures | AAFP

  https://www.aafp.org/pubs/afp/issues/2003/1015/p1527.html

  Stress fractures often occur in nonathletes or deconditioned persons who begin a new exercise program, such as military recruits. […] Women are generally more likely to develop stress fractures than men. […] In both men and women, stress fractures tend to recur. Approximately 60 percent of persons with a stress fracture have had a previous stress fracture. […] Stress fractures of the lower extremity most commonly involve the tibia and metatarsal bones. […] Stress fractures of the fibula, the navicula, the pelvis, and the femoral neck of the femur are less common. […] Tibial fractures are the most common lower extremity stress fracture, accounting for approximately one half of all stress fractures in children and adults. […] Metatarsal fractures represent approximately 25 percent of stress fractures.

• #88 Common Stress Fractures | AAFP

  https://www.aafp.org/pubs/afp/issues/2003/1015/p1527.html

  Stress fractures often occur in nonathletes or deconditioned persons who begin a new exercise program, such as military recruits. […] Women are generally more likely to develop stress fractures than men. […] In both men and women, stress fractures tend to recur. Approximately 60 percent of persons with a stress fracture have had a previous stress fracture. […] Stress fractures of the lower extremity most commonly involve the tibia and metatarsal bones. […] Stress fractures of the fibula, the navicula, the pelvis, and the femoral neck of the femur are less common. […] Tibial fractures are the most common lower extremity stress fracture, accounting for approximately one half of all stress fractures in children and adults. […] Metatarsal fractures represent approximately 25 percent of stress fractures.

• #89 Common Stress Fractures | AAFP

  https://www.aafp.org/pubs/afp/issues/2003/1015/p1527.html

  Stress fractures often occur in nonathletes or deconditioned persons who begin a new exercise program, such as military recruits. […] Women are generally more likely to develop stress fractures than men. […] In both men and women, stress fractures tend to recur. Approximately 60 percent of persons with a stress fracture have had a previous stress fracture. […] Stress fractures of the lower extremity most commonly involve the tibia and metatarsal bones. […] Stress fractures of the fibula, the navicula, the pelvis, and the femoral neck of the femur are less common. […] Tibial fractures are the most common lower extremity stress fracture, accounting for approximately one half of all stress fractures in children and adults. […] Metatarsal fractures represent approximately 25 percent of stress fractures.

• #90 Common Stress Fractures | AAFP

  https://www.aafp.org/pubs/afp/issues/2003/1015/p1527.html

  Stress fractures often occur in nonathletes or deconditioned persons who begin a new exercise program, such as military recruits. […] Women are generally more likely to develop stress fractures than men. […] In both men and women, stress fractures tend to recur. Approximately 60 percent of persons with a stress fracture have had a previous stress fracture. […] Stress fractures of the lower extremity most commonly involve the tibia and metatarsal bones. […] Stress fractures of the fibula, the navicula, the pelvis, and the femoral neck of the femur are less common. […] Tibial fractures are the most common lower extremity stress fracture, accounting for approximately one half of all stress fractures in children and adults. […] Metatarsal fractures represent approximately 25 percent of stress fractures.

• #91 Stress Fractures – StatPearls – NCBI Bookshelf

  https://www.ncbi.nlm.nih.gov/books/NBK554538/

  The most common risk factor is an abrupt increase in activity. […] In general, with male and female athletes participating in the same training regime, female athletes have a higher incidence of stress fractures. […] The most common sites for stress fractures are as follows in decreasing order metatarsals, tibia, tarsals, femur, and fibula, followed by the pelvis. […] Some stress fractures are more common in specific sports. […] Stress fractures account for about 20% of all sports medicine injuries, and runners who average more than 25 miles a week are considered high risk. […] In addition to the intrinsic and extrinsic factors already noted, there are additional factors influencing stress fracture development. […] Another factor influencing stress fracture development is overtraining, or a more current name would be relative energy deficiency syndrome. […] Vitamin D is another potential factor influencing the development of stress fractures.

• #92 Stress Fractures – StatPearls – NCBI Bookshelf

  https://www.ncbi.nlm.nih.gov/books/NBK554538/

  The most common risk factor is an abrupt increase in activity. […] In general, with male and female athletes participating in the same training regime, female athletes have a higher incidence of stress fractures. […] The most common sites for stress fractures are as follows in decreasing order metatarsals, tibia, tarsals, femur, and fibula, followed by the pelvis. […] Some stress fractures are more common in specific sports. […] Stress fractures account for about 20% of all sports medicine injuries, and runners who average more than 25 miles a week are considered high risk. […] In addition to the intrinsic and extrinsic factors already noted, there are additional factors influencing stress fracture development. […] Another factor influencing stress fracture development is overtraining, or a more current name would be relative energy deficiency syndrome. […] Vitamin D is another potential factor influencing the development of stress fractures.

• #93 Stress Fractures – StatPearls – NCBI Bookshelf

  https://www.ncbi.nlm.nih.gov/books/NBK554538/

  The most common risk factor is an abrupt increase in activity. […] In general, with male and female athletes participating in the same training regime, female athletes have a higher incidence of stress fractures. […] The most common sites for stress fractures are as follows in decreasing order metatarsals, tibia, tarsals, femur, and fibula, followed by the pelvis. […] Some stress fractures are more common in specific sports. […] Stress fractures account for about 20% of all sports medicine injuries, and runners who average more than 25 miles a week are considered high risk. […] In addition to the intrinsic and extrinsic factors already noted, there are additional factors influencing stress fracture development. […] Another factor influencing stress fracture development is overtraining, or a more current name would be relative energy deficiency syndrome. […] Vitamin D is another potential factor influencing the development of stress fractures.

• #94 Stress Fractures: Causes, Symptoms, and Recovery | The Bone & Joint Center

  https://www.bone-joint.com/stress-fractures-causes-symptoms-and-recovery/

  According to an estimate, stress fractures account for approximately 20% of all sports injuries, which are injuries that are sustained by athletes and physically active individuals. […] Stress fractures occur when the muscles become fatigued and cannot absorb added shock, causing the muscle’s load to transfer to the bone, causing a tiny crack known as a stress fracture. […] Stress fractures are injuries that often result from a sudden increase in the amount or intensity of physical activity. The bone adapts gradually to increased loads through a process called remodeling. This process involves the resorption (destruction) and rebuilding of bone tissue, which accelerates when the load on the bone increases. […] However, if the bones are subjected to unaccustomed force without enough recovery time, they resorb cells faster than the body can replace them. This imbalance makes the bones more susceptible to a stress fracture.

• #95 Stress Fractures: Diagnosis, Treatment, and Prevention | AAFP

  https://www.aafp.org/pubs/afp/issues/2011/0101/p39.html

  Poor nutrition and lifestyle habits may increase the risk of stress fracture. One study found lower 25-hydroxyvitamin D levels in Finnish male military recruits with stress fractures. […] Women with the female athlete triad (i.e., eating disorders, functional hypothalamic amenorrhea, and osteoporosis) are at higher risk of stress fracture. […] A study of female military recruits demonstrated an increased risk of stress fracture with a history of smoking, exercising less than three times per week, and consuming more than 10 alcoholic drinks per week before the start of basic training. […] Certain stress fractures may lead to complications, including progression to complete fractures, development of avascular necrosis, or delays in healing or nonunion. Examples of these high-risk stress fractures include the superolateral femoral neck, patella, anterior tibia, medial malleolus, talus, tarsal navicular, and the fifth metatarsal.

• #96 Stress Fractures and Risk Factors | NGPG

  https://www.ngpg.org/stress-fractures-and-risk-factors

  A stress fracture is an overuse injury to a bone. An overuse injury is a type of injury that develops gradually over a period of time rather than at one specific time. […] There are multiple factors that increase the risk of a stress fracture: […] Intrinsic factors, which are characteristics of the individual, include weakness of the bones and muscles, abnormal alignment of the legs and feet, hormonal or menstrual irregularities, and dietary deficiencies of Vitamin D, calcium, or calories. […] Extrinsic factors, which are outside the individual and may include training errors such as too much activity, too hard or uneven surfaces, and improper footwear. […] Stress fractures can be classified as either low risk / faster healing type or high risk / slower healing type. Low risk stress fractures usually heal well by avoiding high impact activity for 4-8 weeks. High risk fractures do not heal well due to poor blood supply to the bone around the fracture or the amount of stress placed on the bone during normal daily activities. […] Another high risk stress fracture that occurs in the inner side of the midfoot is a navicular stress fracture. […] A high risk stress fracture in a metatarsal is a 5th metatarsal proximal shaft fracture which causes pain and swelling on the outside of the foot.

• #97 Stress Fractures: Diagnosis, Treatment, and Prevention | AAFP

  https://www.aafp.org/pubs/afp/issues/2011/0101/p39.html

  Poor nutrition and lifestyle habits may increase the risk of stress fracture. One study found lower 25-hydroxyvitamin D levels in Finnish male military recruits with stress fractures. […] Women with the female athlete triad (i.e., eating disorders, functional hypothalamic amenorrhea, and osteoporosis) are at higher risk of stress fracture. […] A study of female military recruits demonstrated an increased risk of stress fracture with a history of smoking, exercising less than three times per week, and consuming more than 10 alcoholic drinks per week before the start of basic training. […] Certain stress fractures may lead to complications, including progression to complete fractures, development of avascular necrosis, or delays in healing or nonunion. Examples of these high-risk stress fractures include the superolateral femoral neck, patella, anterior tibia, medial malleolus, talus, tarsal navicular, and the fifth metatarsal.

• #98 Stress Fractures: Diagnosis, Treatment, and Prevention | AAFP

  https://www.aafp.org/pubs/afp/issues/2011/0101/p39.html

  Poor nutrition and lifestyle habits may increase the risk of stress fracture. One study found lower 25-hydroxyvitamin D levels in Finnish male military recruits with stress fractures. […] Women with the female athlete triad (i.e., eating disorders, functional hypothalamic amenorrhea, and osteoporosis) are at higher risk of stress fracture. […] A study of female military recruits demonstrated an increased risk of stress fracture with a history of smoking, exercising less than three times per week, and consuming more than 10 alcoholic drinks per week before the start of basic training. […] Certain stress fractures may lead to complications, including progression to complete fractures, development of avascular necrosis, or delays in healing or nonunion. Examples of these high-risk stress fractures include the superolateral femoral neck, patella, anterior tibia, medial malleolus, talus, tarsal navicular, and the fifth metatarsal.

• #99 Stress Fractures: Diagnosis, Treatment, and Prevention | AAFP

  https://www.aafp.org/pubs/afp/issues/2011/0101/p39.html

  Poor nutrition and lifestyle habits may increase the risk of stress fracture. One study found lower 25-hydroxyvitamin D levels in Finnish male military recruits with stress fractures. […] Women with the female athlete triad (i.e., eating disorders, functional hypothalamic amenorrhea, and osteoporosis) are at higher risk of stress fracture. […] A study of female military recruits demonstrated an increased risk of stress fracture with a history of smoking, exercising less than three times per week, and consuming more than 10 alcoholic drinks per week before the start of basic training. […] Certain stress fractures may lead to complications, including progression to complete fractures, development of avascular necrosis, or delays in healing or nonunion. Examples of these high-risk stress fractures include the superolateral femoral neck, patella, anterior tibia, medial malleolus, talus, tarsal navicular, and the fifth metatarsal.

• #100 Stress Fractures: Diagnosis, Treatment, and Prevention | AAFP

  https://www.aafp.org/pubs/afp/issues/2011/0101/p39.html

  Poor nutrition and lifestyle habits may increase the risk of stress fracture. One study found lower 25-hydroxyvitamin D levels in Finnish male military recruits with stress fractures. […] Women with the female athlete triad (i.e., eating disorders, functional hypothalamic amenorrhea, and osteoporosis) are at higher risk of stress fracture. […] A study of female military recruits demonstrated an increased risk of stress fracture with a history of smoking, exercising less than three times per week, and consuming more than 10 alcoholic drinks per week before the start of basic training. […] Certain stress fractures may lead to complications, including progression to complete fractures, development of avascular necrosis, or delays in healing or nonunion. Examples of these high-risk stress fractures include the superolateral femoral neck, patella, anterior tibia, medial malleolus, talus, tarsal navicular, and the fifth metatarsal.

• #101 Stress Fractures: Diagnosis, Treatment, and Prevention | AAFP

  https://www.aafp.org/pubs/afp/issues/2011/0101/p39.html

  Poor nutrition and lifestyle habits may increase the risk of stress fracture. One study found lower 25-hydroxyvitamin D levels in Finnish male military recruits with stress fractures. […] Women with the female athlete triad (i.e., eating disorders, functional hypothalamic amenorrhea, and osteoporosis) are at higher risk of stress fracture. […] A study of female military recruits demonstrated an increased risk of stress fracture with a history of smoking, exercising less than three times per week, and consuming more than 10 alcoholic drinks per week before the start of basic training. […] Certain stress fractures may lead to complications, including progression to complete fractures, development of avascular necrosis, or delays in healing or nonunion. Examples of these high-risk stress fractures include the superolateral femoral neck, patella, anterior tibia, medial malleolus, talus, tarsal navicular, and the fifth metatarsal.

• #102 Stress Fractures: Diagnosis, Treatment, and Prevention | AAFP

  https://www.aafp.org/pubs/afp/issues/2011/0101/p39.html

  Poor nutrition and lifestyle habits may increase the risk of stress fracture. One study found lower 25-hydroxyvitamin D levels in Finnish male military recruits with stress fractures. […] Women with the female athlete triad (i.e., eating disorders, functional hypothalamic amenorrhea, and osteoporosis) are at higher risk of stress fracture. […] A study of female military recruits demonstrated an increased risk of stress fracture with a history of smoking, exercising less than three times per week, and consuming more than 10 alcoholic drinks per week before the start of basic training. […] Certain stress fractures may lead to complications, including progression to complete fractures, development of avascular necrosis, or delays in healing or nonunion. Examples of these high-risk stress fractures include the superolateral femoral neck, patella, anterior tibia, medial malleolus, talus, tarsal navicular, and the fifth metatarsal.

• #103 Stress Fractures and Risk Factors | NGPG

  https://www.ngpg.org/stress-fractures-and-risk-factors

  A stress fracture is an overuse injury to a bone. An overuse injury is a type of injury that develops gradually over a period of time rather than at one specific time. […] There are multiple factors that increase the risk of a stress fracture: […] Intrinsic factors, which are characteristics of the individual, include weakness of the bones and muscles, abnormal alignment of the legs and feet, hormonal or menstrual irregularities, and dietary deficiencies of Vitamin D, calcium, or calories. […] Extrinsic factors, which are outside the individual and may include training errors such as too much activity, too hard or uneven surfaces, and improper footwear. […] Stress fractures can be classified as either low risk / faster healing type or high risk / slower healing type. Low risk stress fractures usually heal well by avoiding high impact activity for 4-8 weeks. High risk fractures do not heal well due to poor blood supply to the bone around the fracture or the amount of stress placed on the bone during normal daily activities. […] Another high risk stress fracture that occurs in the inner side of the midfoot is a navicular stress fracture. […] A high risk stress fracture in a metatarsal is a 5th metatarsal proximal shaft fracture which causes pain and swelling on the outside of the foot.

• #104 Stress Fractures: Diagnosis, Treatment, and Prevention | AAFP

  https://www.aafp.org/pubs/afp/issues/2011/0101/p39.html

  Poor nutrition and lifestyle habits may increase the risk of stress fracture. One study found lower 25-hydroxyvitamin D levels in Finnish male military recruits with stress fractures. […] Women with the female athlete triad (i.e., eating disorders, functional hypothalamic amenorrhea, and osteoporosis) are at higher risk of stress fracture. […] A study of female military recruits demonstrated an increased risk of stress fracture with a history of smoking, exercising less than three times per week, and consuming more than 10 alcoholic drinks per week before the start of basic training. […] Certain stress fractures may lead to complications, including progression to complete fractures, development of avascular necrosis, or delays in healing or nonunion. Examples of these high-risk stress fractures include the superolateral femoral neck, patella, anterior tibia, medial malleolus, talus, tarsal navicular, and the fifth metatarsal.

• #105 Stress Fractures and Risk Factors | NGPG

  https://www.ngpg.org/stress-fractures-and-risk-factors

  A stress fracture is an overuse injury to a bone. An overuse injury is a type of injury that develops gradually over a period of time rather than at one specific time. […] There are multiple factors that increase the risk of a stress fracture: […] Intrinsic factors, which are characteristics of the individual, include weakness of the bones and muscles, abnormal alignment of the legs and feet, hormonal or menstrual irregularities, and dietary deficiencies of Vitamin D, calcium, or calories. […] Extrinsic factors, which are outside the individual and may include training errors such as too much activity, too hard or uneven surfaces, and improper footwear. […] Stress fractures can be classified as either low risk / faster healing type or high risk / slower healing type. Low risk stress fractures usually heal well by avoiding high impact activity for 4-8 weeks. High risk fractures do not heal well due to poor blood supply to the bone around the fracture or the amount of stress placed on the bone during normal daily activities. […] Another high risk stress fracture that occurs in the inner side of the midfoot is a navicular stress fracture. […] A high risk stress fracture in a metatarsal is a 5th metatarsal proximal shaft fracture which causes pain and swelling on the outside of the foot.

• #106 Stress Fractures – OrthoInfo – AAOS

  https://orthoinfo.aaos.org/en/diseases–conditions/stress-fractures/

  Bone stress injuries occur over time when the bone is repetitively overloaded with a rapid increase in physical activity. This can be from: […] A stress fracture is an overuse injury. It occurs when muscles become fatigued and are unable to absorb added shock. Eventually, the fatigued muscle transfers the overload of stress to the bone causing a tiny crack called a stress fracture. […] Other factors can put you at increased risk of developing a bone stress injury. Modifiable risk factors are things that you can change, while non-modifiable risk factors cannot be controlled. […] Non-modifiable risk factors include: […] Modifiable risk factors: […] Anyone can get a bone stress injury, but this injury is commonly seen in: […] People who take certain long-term medications or have conditions (like osteoporosis) that cause a decrease in bone strength, which can make you more likely to experience a stress fracture even during normal everyday activities. This type of stress fracture is known as a bone insufficiency stress fracture. […] A bone stress injury is caused by bone overload.

• #107 Foot & Ankle Stress Fractures: Causes, Symptoms, Treatments

  https://www.hss.edu/conditions_stress-fractures-foot-ankle.asp

  Stress fractures generally occur by one of two ways: […] People with healthy bones overuse the foot and ankle by frequent, repetitive motion. This is particularly the case in athletes who participate in high-impact sports such as running track and field, football, basketball, soccer, tennis, gymnastics or cheerleading. […] People who have very weak bones from a separate, underlying condition (such as osteoporosis) sustain a stress fracture in the foot even from fairly low-impact activities such as frequent walking. This type of stress fracture is called an „insufficiency fracture” because it happens in a bone that does not have „sufficient” density or strength to withstand normal impact forces. […] The foot and ankle are the most common parts of the body to experience a stress fracture because we are constantly on our feet.

• #108 Stress Fractures of the Foot and Ankle – OrthoInfo – AAOS

  https://orthoinfo.aaos.org/en/diseases–conditions/stress-fractures-of-the-foot-and-ankle/

  Stress fractures are caused by overuse and repetitive activity; they are common in runners and athletes who participate in running-intensive sports, such as soccer and basketball. […] Stress fractures sometimes occur when people change their activities such as trying a new exercise, suddenly increasing the intensity of their workouts, or changing workout surfaces. […] The most common cause of stress fractures is a sudden increase in physical activity. This increase can be in the frequency of activity such as exercising more days per week, or in the duration or intensity of activity such as running longer distances or repetitive high-impact activities following weight gain. […] Certain long-term medications or conditions that cause a decrease in bone strength, such as osteoporosis, can make you more likely to experience a stress fracture even when you are performing normal everyday activities.

• #109 Stress Fractures – OrthoInfo – AAOS

  https://orthoinfo.aaos.org/en/diseases–conditions/stress-fractures/

  Bone stress injuries occur over time when the bone is repetitively overloaded with a rapid increase in physical activity. This can be from: […] A stress fracture is an overuse injury. It occurs when muscles become fatigued and are unable to absorb added shock. Eventually, the fatigued muscle transfers the overload of stress to the bone causing a tiny crack called a stress fracture. […] Other factors can put you at increased risk of developing a bone stress injury. Modifiable risk factors are things that you can change, while non-modifiable risk factors cannot be controlled. […] Non-modifiable risk factors include: […] Modifiable risk factors: […] Anyone can get a bone stress injury, but this injury is commonly seen in: […] People who take certain long-term medications or have conditions (like osteoporosis) that cause a decrease in bone strength, which can make you more likely to experience a stress fracture even during normal everyday activities. This type of stress fracture is known as a bone insufficiency stress fracture. […] A bone stress injury is caused by bone overload.

• #110 Stress Fracture Causes

  https://www.sports-health.com/sports-injuries/general-injuries/stress-fracture-causes

  Bone health in athletes requires an adequate balance between exertion and rest, as well as good nutrition and proper training form. Athletes also must train in a manner that allows their bodies enough time to adjust to increased levels of exertion in order to avoid injury. If any one of these areas is neglected, stress fractures may develop. […] The following are some of the underlying causes of stress fracture development in athletes. Many athletes experiencing stress fractures will have multiple root causes that will need to be addressed before healing and a return to sports can commence. […] It is also possible for non-athletes to develop stress fractures during normal daily activities if they have poor bone density due to a condition that weakens the bone, such as osteoporosis. […] Stress fractures occur due to low bone density from conditions such as osteoporosis.

• #111 Stress Fractures: Causes, Symptoms, and Recovery | The Bone & Joint Center

  https://www.bone-joint.com/stress-fractures-causes-symptoms-and-recovery/

  Several factors can increase your risk of developing a stress fracture. These include: […] Stress fractures are more common in people who participate in high-impact sports, such as track and field, basketball, tennis, dance, or gymnastics. These sports involve repetitive impact activities that can put excessive stress on the bones. […] Individuals who suddenly shift from a sedentary lifestyle to an active training regimen or those who rapidly increase the intensity, duration, or frequency of their training sessions are more likely to develop a stress fracture. This is because their bones may not have enough time to adapt to the increased stress levels. […] Women, particularly those with abnormal or absent menstrual periods, are at higher risk of developing stress fractures. Hormonal changes and lower bone density associated with irregular menstrual cycles can contribute to this increased risk.

• #112 Stress Fractures: Practice Essentials, Pathophysiology, Etiology

  https://emedicine.medscape.com/article/1270244-overview

  The stress fracture, first described by Breithaupt in 1855, is a common overuse injury seen in athletes and military recruits. The injury is usually seen in the lower extremities, but it has also been reported in the upper extremities and the ribs. A stress fracture is caused by repetitive and submaximal loading of the bone, which eventually becomes fatigued and leads to a true fracture. The typical presentation is a complaint of increasing pain in the lower extremity during exercise or activity. The patient’s history usually reveals a recent increase in either training volume or intensity. […] Stress fractures result from recurrent and repetitive loading of bone. The stress fracture differs from other types of fractures in that in most cases, no acute traumatic event precedes the symptoms.

• #113 Stress Fractures – StatPearls – NCBI Bookshelf

  https://www.ncbi.nlm.nih.gov/books/NBK554538/

  The most common risk factor is an abrupt increase in activity. […] In general, with male and female athletes participating in the same training regime, female athletes have a higher incidence of stress fractures. […] The most common sites for stress fractures are as follows in decreasing order metatarsals, tibia, tarsals, femur, and fibula, followed by the pelvis. […] Some stress fractures are more common in specific sports. […] Stress fractures account for about 20% of all sports medicine injuries, and runners who average more than 25 miles a week are considered high risk. […] In addition to the intrinsic and extrinsic factors already noted, there are additional factors influencing stress fracture development. […] Another factor influencing stress fracture development is overtraining, or a more current name would be relative energy deficiency syndrome. […] Vitamin D is another potential factor influencing the development of stress fractures.

• #114 Stress Fractures in Young Athletes

  https://www.nationwidechildrens.org/conditions/health-library/stress-fractures-in-young-athletes

  Stress fractures happen when muscles are too tired to take on the impact of exercise, and the bones absorb the added stress. […] These are the most common causes of stress fractures: Increasing the frequency or intensity of exercise too quickly, Suddenly changing the workout surface, Getting sudden and significantly more playing time, Using or wearing gear that doesn’t offer enough support, such as shoes that are worn out, Insufficient periods of rest between practice or events. […] Stress fractures can happen during any number of sports, but they tend to be most frequent in young athletes who participate in sports that involve running and jumping, such as basketball, gymnastics, and track and field. These sports involve repetitive movements that strain the muscles and bones. This increases the risk for a stress fracture.

• #115 Stress Fractures in Young Athletes

  https://www.nationwidechildrens.org/conditions/health-library/stress-fractures-in-young-athletes

  Stress fractures happen when muscles are too tired to take on the impact of exercise, and the bones absorb the added stress. […] These are the most common causes of stress fractures: Increasing the frequency or intensity of exercise too quickly, Suddenly changing the workout surface, Getting sudden and significantly more playing time, Using or wearing gear that doesn’t offer enough support, such as shoes that are worn out, Insufficient periods of rest between practice or events. […] Stress fractures can happen during any number of sports, but they tend to be most frequent in young athletes who participate in sports that involve running and jumping, such as basketball, gymnastics, and track and field. These sports involve repetitive movements that strain the muscles and bones. This increases the risk for a stress fracture.

• #116 Stress Fractures: Causes, Symptoms, and Recovery | The Bone & Joint Center

  https://www.bone-joint.com/stress-fractures-causes-symptoms-and-recovery/

  Several factors can increase your risk of developing a stress fracture. These include: […] Stress fractures are more common in people who participate in high-impact sports, such as track and field, basketball, tennis, dance, or gymnastics. These sports involve repetitive impact activities that can put excessive stress on the bones. […] Individuals who suddenly shift from a sedentary lifestyle to an active training regimen or those who rapidly increase the intensity, duration, or frequency of their training sessions are more likely to develop a stress fracture. This is because their bones may not have enough time to adapt to the increased stress levels. […] Women, particularly those with abnormal or absent menstrual periods, are at higher risk of developing stress fractures. Hormonal changes and lower bone density associated with irregular menstrual cycles can contribute to this increased risk.

• #117 Stress Fractures in Young Athletes

  https://www.nationwidechildrens.org/conditions/health-library/stress-fractures-in-young-athletes

  Stress fractures happen when muscles are too tired to take on the impact of exercise, and the bones absorb the added stress. […] These are the most common causes of stress fractures: Increasing the frequency or intensity of exercise too quickly, Suddenly changing the workout surface, Getting sudden and significantly more playing time, Using or wearing gear that doesn’t offer enough support, such as shoes that are worn out, Insufficient periods of rest between practice or events. […] Stress fractures can happen during any number of sports, but they tend to be most frequent in young athletes who participate in sports that involve running and jumping, such as basketball, gymnastics, and track and field. These sports involve repetitive movements that strain the muscles and bones. This increases the risk for a stress fracture.

• #118 Stress Fractures: Symptoms, Causes & Treatment

  https://my.clevelandclinic.org/health/diseases/15841-stress-fractures

  Stress fractures start as inflammation on a bones surface (healthcare providers call this a stress reaction). Stress reactions are like deep bone bruises. If something keeps putting pressure on that same spot before the stress reaction can heal, your bone can crack and create a stress fracture. […] Some of the most common causes of stress fractures include: Practicing or training too often without resting enough. Starting a new sport or physical activity without the right training, guidance or equipment. Quickly increasing your activity level (suddenly ramping up workouts, training or other physical activity). Changing the surface you train or work on (switching from running on an indoor track to road running, or starting a job that requires you to stand on a hard floor like concrete). Working or training without proper equipment. Specializing in one sport too early (children who play the same sport year-round without a break between seasons are more likely to experience a stress fracture than kids who play a variety of sports).

• #119 Stress Fracture Causes

  https://www.sports-health.com/sports-injuries/general-injuries/stress-fracture-causes

  Athletes who lack the athletic conditioning to take on a certain level of sports activity or overdo it in a single sport may develop stress fractures, due to lack of cross-training. […] Athletes who expect to return to their peak-season level of conditioning after the off-season risk developing stress fractures. […] Year-round athletes who do not change sports with each passing season may develop stress fractures, especially during the childhood and adolescent years. […] Playing sports with old, worn-out equipment, ill-fitting equipment, or no equipment at all can result in stress fractures. […] Athletes who do not follow established techniques when playing their sport can develop stress fractures. […] Early-onset osteoporosis in adolescent girls and/or elite female athletes related to high levels of athletic intensity and poor nutrition can cause stress fractures.

• #120 Stress fracture – Wikipedia

  https://en.wikipedia.org/wiki/Stress_fracture

  Stress fractures commonly occur in sedentary people who suddenly undertake a burst of exercise (whose bones are not used to the task). They may also occur in athletes completing high volume, high impact training, such as running or jumping sports. Stress fractures are also commonly reported in soldiers who march long distances. […] Muscle fatigue can also play a role in the occurrence of stress fractures. In a runner, each stride normally exerts large forces at various points in the legs. Each shock a rapid acceleration and energy transfer must be absorbed. Muscles and bones serve as shock absorbers. However, the muscles, usually those in the lower leg, become fatigued after running a long distance and lose their ability to absorb shock. As the bones now experience larger stresses, this increases the risk of fracture. […] Previous stress fractures have been identified as a risk factor. Along with history of stress fractures, a narrow tibial shaft, high degree of hip external rotation, osteopenia, osteoporosis, and pes cavus are common predisposing factors for stress fractures.

• #121 Stress Fractures: Practice Essentials, Pathophysiology, Etiology

  https://emedicine.medscape.com/article/1270244-overview

  The stress fracture, first described by Breithaupt in 1855, is a common overuse injury seen in athletes and military recruits. The injury is usually seen in the lower extremities, but it has also been reported in the upper extremities and the ribs. A stress fracture is caused by repetitive and submaximal loading of the bone, which eventually becomes fatigued and leads to a true fracture. The typical presentation is a complaint of increasing pain in the lower extremity during exercise or activity. The patient’s history usually reveals a recent increase in either training volume or intensity. […] Stress fractures result from recurrent and repetitive loading of bone. The stress fracture differs from other types of fractures in that in most cases, no acute traumatic event precedes the symptoms.

• #122 Overview of bone stress injuries and stress fractures – UpToDate

  https://www.uptodate.com/contents/overview-of-bone-stress-injuries-and-stress-fractures

  As defined below, stress fractures are overuse injuries to bones caused by repetitive stresses, either tensile or compressive. Stress fractures may be the result of a small number of repetitions with a relatively large load (eg, a military recruit marching for several miles with a heavy backpack), a large number of repetitions with a usual load (eg, an athlete training for a long-distance race), or a combination of increased load and increased repetitions. […] An overview of the classification, risk factors, diagnosis, management, and prevention of stress fractures is presented here.

• #123 Stress fracture – Wikipedia

  https://en.wikipedia.org/wiki/Stress_fracture

  Stress fractures commonly occur in sedentary people who suddenly undertake a burst of exercise (whose bones are not used to the task). They may also occur in athletes completing high volume, high impact training, such as running or jumping sports. Stress fractures are also commonly reported in soldiers who march long distances. […] Muscle fatigue can also play a role in the occurrence of stress fractures. In a runner, each stride normally exerts large forces at various points in the legs. Each shock a rapid acceleration and energy transfer must be absorbed. Muscles and bones serve as shock absorbers. However, the muscles, usually those in the lower leg, become fatigued after running a long distance and lose their ability to absorb shock. As the bones now experience larger stresses, this increases the risk of fracture. […] Previous stress fractures have been identified as a risk factor. Along with history of stress fractures, a narrow tibial shaft, high degree of hip external rotation, osteopenia, osteoporosis, and pes cavus are common predisposing factors for stress fractures.

• #124 Common Stress Fractures | AAFP

  https://www.aafp.org/pubs/afp/issues/2003/1015/p1527.html

  Stress fractures often occur in nonathletes or deconditioned persons who begin a new exercise program, such as military recruits. […] Women are generally more likely to develop stress fractures than men. […] In both men and women, stress fractures tend to recur. Approximately 60 percent of persons with a stress fracture have had a previous stress fracture. […] Stress fractures of the lower extremity most commonly involve the tibia and metatarsal bones. […] Stress fractures of the fibula, the navicula, the pelvis, and the femoral neck of the femur are less common. […] Tibial fractures are the most common lower extremity stress fracture, accounting for approximately one half of all stress fractures in children and adults. […] Metatarsal fractures represent approximately 25 percent of stress fractures.

• #125 Stress Fractures: Causes, Symptoms, and Recovery | The Bone & Joint Center

  https://www.bone-joint.com/stress-fractures-causes-symptoms-and-recovery/

  Several factors can increase your risk of developing a stress fracture. These include: […] Stress fractures are more common in people who participate in high-impact sports, such as track and field, basketball, tennis, dance, or gymnastics. These sports involve repetitive impact activities that can put excessive stress on the bones. […] Individuals who suddenly shift from a sedentary lifestyle to an active training regimen or those who rapidly increase the intensity, duration, or frequency of their training sessions are more likely to develop a stress fracture. This is because their bones may not have enough time to adapt to the increased stress levels. […] Women, particularly those with abnormal or absent menstrual periods, are at higher risk of developing stress fractures. Hormonal changes and lower bone density associated with irregular menstrual cycles can contribute to this increased risk.

• #126 Causes of Higher Risk of Stress Fractures in Female Runners

  https://www.jefferson.edu/about/news-and-events/2020/8/causes-of-higher-risk-of-stress-fractures-in-female-runners.html

  A pair of new studies identify overlooked physiological factors and lack of knowledge around wellness as contributors to risk of stress fracture in women who run. […] Women, however, are at least twice as likely as men to develop stress fractures, an injury that impacts around 20% of runners. […] The two studies aimed to assess what contributed to risk of stress fractures, from the physiological, such as – bone structure and density, muscle mass, hormonal status, to ones influenced by training routine, such as training intensity, nutrition, insufficient strengthening, and ignoring pain. […] The researchers found that while there was no difference in estradiol hormone levels between the two groups, women who had a stress fracture history reported menstrual changes or irregular periods as a result of their training, or during peak training times.

• #127 Causes of Higher Risk of Stress Fractures in Female Runners

  https://www.jefferson.edu/about/news-and-events/2020/8/causes-of-higher-risk-of-stress-fractures-in-female-runners.html

  They also found through the DXA testing that women with a history of stress fractures had lower hip bone mineral density compared to women with no history of stress fractures, indicating decreased bone strength that could increase risk of injury. […] While the link between menstrual changes and bone strength is unclear, our findings also indicate that asking female runners about any menstrual irregularities during heavier training times is important during routine screening. […] Specifically, compared to women without stress fractures, women with histories of stress fractures had increased their training load more quickly. […] Also, while they knew of the importance of nutrition and strengthening exercises, women with a history of stress fracture more often reported not having or making the time for a balanced diet and proper cross-training to complement their running regimen.

• #128 Causes of Higher Risk of Stress Fractures in Female Runners

  https://www.jefferson.edu/about/news-and-events/2020/8/causes-of-higher-risk-of-stress-fractures-in-female-runners.html

  They also found through the DXA testing that women with a history of stress fractures had lower hip bone mineral density compared to women with no history of stress fractures, indicating decreased bone strength that could increase risk of injury. […] While the link between menstrual changes and bone strength is unclear, our findings also indicate that asking female runners about any menstrual irregularities during heavier training times is important during routine screening. […] Specifically, compared to women without stress fractures, women with histories of stress fractures had increased their training load more quickly. […] Also, while they knew of the importance of nutrition and strengthening exercises, women with a history of stress fracture more often reported not having or making the time for a balanced diet and proper cross-training to complement their running regimen.

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