Materiały źródłowe

• #1 Jumpers Knee – StatPearls – NCBI Bookshelf

  https://www.ncbi.nlm.nih.gov/books/NBK532969/

  „Jumper’s knee,” also called patellar tendinopathy, is a painful condition of the knee, mainly activity-related, caused by small tears in the patellar tendon that mainly occurs in sports requiring strenuous jumping and results in localized patellar tendon tenderness. The tears are typically caused by accumulated stress on the patellar or quadriceps tendon. […] Jumper’s knee is an overuse injury of the knee extensor mechanism due to repetitive mechanical stress from athletic activities requiring movements such as jumping, landing, acceleration, deceleration, and cutting. Micro-tearing of the knee extensor tendons can arise after constant repetition of these movements during a single exercise session or if there is insufficient rest between sessions. […] There are several intrinsic factors of the knee that predispose to this pathology. These include ligamentous laxity, quadriceps and hamstring tightness, excessive Q-angle of the knee, abnormal patellar height, previous, ongoing inflammation of the knee, and excessive force generation on the knee. Other factors can also lead to the development of the jumper’s knee, such as excessive volume and frequency of training, the athlete’s performance level, and the hardness of the ground where the sport is practiced.

• #1 PATELLAR TENDINOPATHY – BreakThrough Physical Therapy

  https://www.breakthroughpt.com/patellar-tendinopathy/

  Athletes participating in sports such as basketball, volleyball, and track field are the most at risk for developing Patellar Tendinopathy, also referred to as jumpers knee. […] Patellar Tendinopathy is mainly caused by overuse of the knee and particularly the patellar tendon. This tendon attaches the bottom of the knee cap (patella) to the top of the shin bone (tibia). […] Micro-trauma can occur when the patellar tendon is subjected to extreme forces such as rapid acceleration, deceleration, cutting, and jumping, resulting in Patellar Tendinopathy. […] Acute tendinopathy, referred to as patellar tendinitis, involves an active inflammatory process. […] Chronic patellar tendinopathy, referred as patellar tendinosis, usually manifests after 6 weeks to 3 months following overuse and/or stress overload of the patellar tendon. […] This injury is caused by degenerative changes occurring in the tendon, usually when athletes push past pain and dont properly take the time off and allow the tendon to heal.

• #1 Jumpers Knee – StatPearls – NCBI Bookshelf

  https://www.ncbi.nlm.nih.gov/books/NBK532969/

  Jumper’s knee is a clinical diagnosis through detailed history taking and a physical exam. Ultrasound can facilitate the diagnosis, as this imaging study is readily available and affordable. […] It is appropriate to mention that patellar „tendinitis” is a misnomer as the condition is felt by many clinicians to be more tendinosis than it is tendinitis. In published studies, it is noted that classic inflammatory cells are usually absent. […] Multiple theories have been proposed for the pathogenesis of patellar tendinopathy, mechanical, vascular, and impingement related. However, the chronic overload theory is the most commonly reported. Repetitive overload on the knee extensor tendons will cause it to weaken progressively, eventually leading to failure. […] Repetitive microtrauma on the tendons causes microscopic changes. Histologic studies of specimens reveal degeneration, fibrinoid necrosis, pseudocyst change, randomized collagen with neovascularization, tenocyte infiltration, micro-tears of the tendinous tissue, focal degeneration near the bone-tendon insertion, hyaline degeneration, and metaplasia.

• #1 Patellar Tendinitis (Jumper’s Knee): Symptoms & Treatment

  https://my.clevelandclinic.org/health/diseases/patellar-tendonitis-jumpers-knee

  Patellar tendinitis happens when repeated movements (like jumping) gradually weaken the patellar tendon in your knee. […] Patellar tendinitis is a repetitive strain injury. Overusing your knee and putting too much repeated stress on your patellar tendon causes it. […] Repeated wear and tear (like jumping a lot or sprinting often) can make tiny tears in your tendon. […] The damage that causes patellar tendinitis builds up slowly over time. […] A sudden, intense increase in physical activity: If you start a new sport or quickly ramp up how intensely you train, your body may not be ready for the abrupt increase in your activity level. […] Not resting enough or doing an activity too often: Your body needs time to rest and recover between sessions of intense physical activity. Training or using your knees too often doesnt give your patellar tendon the time it needs to heal.

• #1 Patellar Tendinitis | Orthopedics & Sports Medicine

  https://health.uconn.edu/orthopedics-sports-medicine/conditions-and-treatments/where-does-it-hurt/knee/patellar-tendinitis/

  Patellar Tendinitis is also known as jumpers knee. It is an inflammation in the patellar tendon, the band of tissue that connects the kneecap to the shinbone. […] The most common activity causing patellar tendinitis is jumping, hence it is commonly referred to as jumpers knee. Activities that place repetitive stress on the patellar tendon may cause it to become inflamed. Other activities such as running, walking, or bicycling may also cause patellar tendinitis. Most commonly, however, it is caused by tightness of the quadricep muscles. […] Patellar tendinitis can also be caused by problems with the way your hips, legs, knees, or feet are aligned. Having wide hips, being knock-kneed, or having flat feet can predispose you to patellar tendinitis because certain body mechanics will place more stress on these areas with activity.

• #1 Patellar Tendinopathy

  https://pmc.ncbi.nlm.nih.gov/articles/PMC4547110/

  Patellar tendinopathy is a common condition, often presenting with anterior knee pain. […] There are several factors that influence the development of patellar tendinopathy, with a high prevalence among athletes in jumping sports, particularly basketball and volleyball. Nine factors contribute to the pathogenesis of patellar tendinopathy: weight, body mass index (BMI), waist-to-hip ratio, leg length difference, arch height of the foot, quadriceps flexibility and strength, hamstring flexibility, and vertical jump performance. […] There are several theories on the pathogenesis of patellar tendinopathy, including vascular, mechanical, impingement-related, and nervous system causes. Chronic repetitive tendon overload is the most commonly proposed theory. […] Both in vitro and in vivo studies have shown that neovascularization and an increased quantity of specific proteins and enzymes can also contribute to tendon degeneration. […] A second proposed mechanical etiology is inferior patellar pole impingement shown on magnetic resonance images (MRIs) during flexion. […] End-stage patellar tendinopathy shows absent or minimal inflammation because the underlying pathology is degenerative.

• #1 Patellar tendonitis: Treatment, exercises, symptoms, and recovery time

  https://www.medicalnewstoday.com/articles/321294

  Patellar tendonitis also called jumpers knee is a type of knee tendon pain. It happens when the tendons connecting the kneecap to the shinbone become inflamed from overuse. […] Repetitive activities are usually the cause of patellar tendonitis. It is common in people who play sports that involve running and jumping. For example, a 2017 German study found that around 13% of young soccer players experienced patellar tendonitis. […] Suddenly increasing a persons training volume, running or jumping on hard surfaces such as concrete, and exercising too much can also cause tendonitis.

• #1 Patellar tendonitis: Diagnosis & therapy | medi

  https://www.medi.de/en/diagnosis-treatment/knee-pain/patellar-tendinopathy/

  Patellar tendonitis (jumpers knee) develops when the patellar tendon is irritated by unusual or severe tensile stress. […] Male sportspeople between the ages of 20 and 40 who train in a jump-intensive sport (such as basketball, volleyball) several times a week are often affected. Activities with lots of stop-and-go movements (such as tennis) and quick changes of direction (such as football) can also lead to patellar tendonitis. […] Patellar tendonitis is also widespread among runners, which is why it also called jumper’s knee or runner’s knee. […] The following synonyms are used for patellar tendonitis: Patellar tendinopathy, Patella tip syndrome, Runner’s knee, Jumper’s knee. […] Sports that involve intensive jumping volleyball, basketball, some disciplines in light athletics such as long jump or high jump, Jogging and running marathons, Sports with rapid changes of direction football, handball, Sports with abrupt stop-and-go movements tennis, squash, badminton.

• #1 Patellar Tendonitis

  https://aidyourhamstring.com/hamstring-injury-related-conditions/patellar-knee-tendonitis.php

  Jumpers Knee caused by jumping sports and repetitive use of the knee joint. Activities that require sharp, sudden changes of direction such as soccer. Activities that involve repetitive use of the knees, such as cycling. Having diabetes, gout and/or para-hypothyroidism. Landing or falling heavily on your knees. Age – as we grow older, our tendons become more brittle and therefore prone to injury. Mis-alignment of the foot, ankle, and leg including flat feet, leg length discrepancy, tracking abnormalities etc.

• #1

  https://link.springer.com/article/10.1007/s00402-023-04998-5

  Patellar tendinopathy (PT), or jumpers knee, is an overuse injury that occurs in professional, as well as recreational, athletes. This condition is a noncontact injury, typically characterized by gradually increasing pain in the patellar tendon. It is prevalent in participants of several sports, but it occurs mostly in jumping sports. Risk factors differ between sexes, playing conditions, the kind of sport, playing level and personal characteristics. There are many causes and possible risk factors described in the literature that could lead to PT. According to Lian et al. the prevalence rates of PT in professional volleyball and basketball players are 45% and 32%, respectively, whereas the overall prevalence in elite players from nine different sports is 14.2%. Zwerver et al. identified that participation in sports is a risk factor for PT. Furthermore, it could be assumed that the number of training hours is an additional risk factor for developing PT, because the elite athletes who trained for more than 12 h per week developed PT more frequently in comparison with non-elite athletes who practiced 4 to 5 h weekly, as has been reported by some studies. Being more youthful and taller could be additional risk factors, according to Zwerver et al. In an online survey which included 2224 subjects, the identified risk factors found for PT included playing at the national level, male gender and playing volleyball (in comparison to basketball). This difference between volleyball and basketball players could be explained by the fact that professional volleyball players jump higher than professional basketball players, as measured in a drop jump task. The personal monitoring of athletes according to individual risk factors may help prevent PT. In addition, because the highest prevalence of PT in volleyball athletes concerns those who play as outside hitters or middle blockers/hitters, a change in playing position to libero/opposite hitters or setters could be an option. The same findings were reported by two other studies, demonstrating that mens odds when it came to PT are more than twice as high as in the opposite sex. This can be explained by the fact that womens patellar tendons are exposed to lower forces because they have less quadricep strength and an inferior jumping capacity. A heavier load in jumping sports was also demonstrated as a risk factor for PT by other authors. The playing surface is described also as a risk factor. Players who played on concrete had a prevalence of PT of around 38%, in contrast to the approximately 20% in athletes who played on other surfaces. Additionally, in a study including 105 subjects, 52 with PT and 53 without, the lever arm ratio and moment arm ratio from lateral radiographs were significantly different between the two groups. A higher BMI was also identified as a potential risk factor for PT in some studies, but this was not confirmed by others. In their study, Bisseling et al. evaluated whether the landing strategy differed amongst healthy volleyball players and volleyball players with PT, to identify if the landing strategy is a risk factor in developing PT. Finally, according to Visnes et al., the presence of hypoechoic areas and neovascularization among asymptomatic athletes represented a risk factor for developing PT as well.

• #1 Physical therapy in Burr Ridge & Hinsdale for Knee Pain – Patellar Tendonitis

  https://www.dptsport.com/Injuries-Conditions/Knee/Knee-Issues/Patellar-Tendonitis/a~1550/article.html

  Patellar tendonitis occurs most often as a result of stresses placed on the supporting structures of the knee. […] Overuse injuries from sports activities is the most common cause but anyone can be affected, even those who do not participate in sports or recreational activities. […] There are extrinsic (outside) factors that are linked with overuse tendon injuries of the knee. […] Training errors are summed up by the rule of „toos”. This refers to training too much, too far, too fast, or for too long. […] Advancing the training schedule forward too quickly is a major cause of patellar tendonitis. […] Intrinsic (internal) factors such as age, flexibility, and joint laxity are also important. […] Malalignment of the foot, ankle, and leg can play a key role in tendonitis. […] An increased Q-angle or femoral anteversion are two common types of malalignment that contribute to patellar tendonitis.

• #1 Patellar tendonitis: Diagnosis & therapy | medi

  https://www.medi.de/en/diagnosis-treatment/knee-pain/patellar-tendinopathy/

  Unsuitable footwear, Wrong sporting techniques, Excessively hard surfaces, for example asphalt, Excessively intensive training sessions, Unusual stress, for example. when learning a new sport or when training is started too enthusiastically and the knee is subjected to extreme forces. […] The elasticity of the tendons diminishes with increasing age, Malalignment of the knee and foot deformities, Shortened tendons or muscles, Congenital ligamentous weakness (lax ligaments).

• #1 Physical therapy in Burr Ridge & Hinsdale for Knee Pain – Patellar Tendonitis

  https://www.dptsport.com/Injuries-Conditions/Knee/Knee-Issues/Patellar-Tendonitis/a~1550/article.html

  The Q-angle is the angle formed by the patellar tendon and the axis of pull of the quadriceps muscle. […] Overuse is simply a mismatch between the load or stress on the tendon and the ability of that tendon to distribute the force. […] If the forces placed on the tendon are greater than the strength of the structure, then injury can occur. […] Chronic tendonitis is really a problem called tendonosis. Inflammation is not present. Instead, degeneration and/or scarring of the tendon has developed.

• #1 Understanding Jumper’s Knee: Causes, Symptoms, and Treatment | Aligned Orthopedic Partners

  https://alignedortho.com/understanding-jumpers-knee-causes-symptoms-and-treatment/

  Improper technique: Poor form or technique during sports or exercises that involve the knee joint can put additional stress on the patellar tendon, increasing the risk of injury. […] Sudden increase in activity: Rapidly increasing the intensity, duration, or frequency of physical activity without proper conditioning can overwhelm the patellar tendon, leading to inflammation and pain. […] Anatomical factors: Certain anatomical factors, such as a high-riding kneecap (patella alta) or a misaligned knee joint, can predispose individuals to the development of jumpers knee. […] Understanding the underlying causes of jumpers knee is crucial for developing an effective treatment plan and preventing the condition from recurring.

• #1

  https://www.mountelizabeth.com.sg/conditions-diseases/patellar-tendonitis/symptoms-causes

  Patellar tendonitis (jumper’s knee) is usually caused by overuse of the knee joint and repeated stress on the patellar tendon. […] It is more common among people who play sports that involve squatting and jumping movements such as basketball and volleyball. […] Patellar tendonitis risk factors include: […] Tight thigh and hamstring muscles, which can increase the strain on the patellar tendon. […] Uneven leg muscle strength or muscular imbalance, with stronger muscles pulling harder on the patellar tendon. […] Abnormal alignment of the legs, ankles and feet, including conditions such as bow legs, knock knees and flat feet. […] Increased tension in the patellar tendon, which can occur when tendon growth cannot keep up with the growth of the lower leg. […] Obesity, which places increased pressure on the knee joint. […] Chronic illness such as kidney failure, rheumatoid arthritis or diabetes which can affect blood flow to the knee and weaken the tendon. […] Poor jumping and landing technique, due to the way the quadricep muscles contract.

• #1 Patellar Tendonitis Causes And Symptoms – Klarity Health Library

  https://my.klarity.health/patellar-tendonitis-causes-and-symptoms/

  Having tight quadriceps and hamstrings can result in more strain being exerted on your patellar tendon, resulting in patellar tendonitis. […] If you have one of the following, you have a higher risk of developing patellar tendonitis: Knock knees, Flat feet, Wide hip. This is because more stress will be exerted on your patellar tendon whilst you are exercising. […] It has been reported that those assigned male at birth are more likely to develop patellar tendonitis than those assigned female at birth. […] Being overweight is a risk factor for patellar tendonitis. […] If you start to overuse your patellar tendon and place additional stress on the tendon, due to you starting to train more, and at a higher intensity, the overloading of stress on the patellar tendon can sadly result in patellar tendonitis.

• #1 Patellar tendinitis – Wikipedia

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

  Patellar tendinitis is an overuse injury from repetitive overloading or repetitive stress of the patellar tendon of the knee leading to microtears and inflammation that do not have time to heal before the next use. […] Risk factors for patellar tendonitis are low ankle dorsiflexion (stiff ankles) and ankle sprains, weak gluteal muscles, and muscle tightness, particularly in the calves, quadriceps muscle, and hamstrings.

• #1

  https://www.parkwayeast.com.sg/conditions-diseases/patellar-tendonitis/symptoms-causes

  Patellar tendonitis (jumper’s knee) is usually caused by overuse of the knee joint and repeated stress on the patellar tendon. It is more common among people who play sports that involve squatting and jumping movements such as basketball and volleyball. […] Patellar tendonitis risk factors include: […] Increased tension in the patellar tendon, which can occur when tendon growth cannot keep up with the growth of the lower leg. This is known as Sinding-Larsen-Johansson disorder, where the tendon pulls on the bottom tip of the kneecap. […] Chronic illness such as kidney failure, rheumatoid arthritis or diabetes which can affect blood flow to the knee and weaken the tendon.

• #1 Patellar Tendonitis | Symptoms, Diagnosis & Treatment

  https://www.cincinnatichildrens.org/health/p/patellar-tendonitis

  Patellar tendonitis is also called jumpers knee. It can develop in athletes who jump again and again, like in basketball or volleyball. It is also common in runners. […] Many issues may play a part in the development of patellar tendonitis in athletes. These include: Rapid increase in how often or how hard you train, Poor flexibility of the thigh (quadriceps and hamstring) muscles, Poor strength of the quadriceps muscles, Muscle imbalances in the leg and the hips, Extremes of foot shape: high arch or flat feet. […] Athletes can avoid tendonitis by increasing exercise intensity and frequency slowly over time. Proper strengthening and stretching of the quadriceps and hamstrings muscles may also help.

• #1 Patellar tendinitis: Etiology, causes and treatment | Centro Médico Teknon

  https://www.teknon.es/en/especialidades/castro-dominguez-francisco/frequent-questions/patellar-tendinitis-etiology-causes-treatment

  Patellar tendinitis, also known as patellar tendinopathy or „jumper’s knee,” is a common injury that affects the tendon that connects the kneecap (patella) to the tibia. […] Patellar tendonitis usually develops due to repetitive overloading of the patellar tendon. Activities that involve frequent jumping, such as basketball, volleyball, and track and field, may increase the risk of developing this condition. Patellar tendonitis can also occur as a result of: […] Chronic overload: Participation in activities that place excessive stress on the patellar tendon, such as running, jumping, climbing stairs, or repeated bending. […] Biomechanical malalignment: Factors such as improper leg alignment, flat feet, or high arches can increase stress on the patellar tendon. […] Muscle weakness: Lack of strength or flexibility in the leg muscles, especially the quadriceps muscles and hip muscles, can contribute to overloading the patellar tendon.

• #1 Do You Have Jumper’s Knee (Patellar Tendinitis)? | Knee Pain CausesAccessibility ToolsIncrease TextDecrease TextGrayscaleHigh ContrastNegative ContrastLight BackgroundLinks UnderlineReadable FontResetHelpFeedback

  https://www.njspineandortho.com/conditions/patellar-tendinitis/

  Have tight quadriceps muscles: Muscle tightness, especially in the thighs, can apply added strain to the tendons. […] Have muscle imbalances in the legs: If one muscle group is stronger than the others, it can pull on the patellar tendon unevenly. This can lead to inflammation or ripping. […] Suffer from chronic illnesses: Some illnesses like diabetes, kidney failure, or autoimmune diseases disrupt blood flow to the knee. Since blood plays a crucial role in healing, this can cause a cumulative effect as the insult of everyday movement causes repeat damage to the knee.

• #1 Patellar tendonitis – Causes, symptoms, and treatment

  https://www.sports-injury-physio.com/post/patellar-tendonitis-causes-symptoms-and-treatment

  Patellar tendonitis is an overuse injury that affects the patellar tendon. […] The vast majority of cases of patellar tendonitis are caused by overuse, but sometimes a direct blow to the patellar tendon (e.g. someone kicks you or you bang your knee against something) can also cause the tendon to develop patellar tendonitis or tendinopathy. […] Overuse injuries like patellar tendonitis develop when you either: Do an activity that is a lot more intense or harder than what you’re used to, e.g. playing in a tournament that results in six hours of high-intensity play when you’re used to two hours; Or you don’t allow your body enough recovery time between high-intensity training sessions. […] There is evidence that lack of hamstring and quadriceps flexibility, restricted ankle dorsiflexion range (how well your foot bends up towards your shin), as well as reduced calf and glute function may increase your risk of developing patellar tendonitis.

• #1 Patellar Tendonitis and Running: Symptoms, Causes and Research-Backed Treatment Options – Runners Connect

  https://runnersconnect.net/patellar-tendonitis-running/

  First, why do runners get patellar tendonitis? […] one study found that patella tendonitis accounts for just under 5% of all running injuries. […] Because the patellar tendon absorbs so much force, the long strands of connective tissue that make up the tendon can become injured. […] As with Achilles tendonitis, the true problem seems to be not so much the inflammation, but the damaged and degraded tendon structure that results from chronic stress on the patellar tendon. […] Unfortunately, this can result in patellar tendonitis becoming a chronic issue that persists for months. […] Poor hamstring and quadriceps flexibility have both been connected with an increased risk for patellar tendonitis. […] Moreover, poor explosive leg strength may be related as well. […] Additionally, weak thigh muscles might be unable to adequately slow down your descent during impact, subjecting your knee to greater loads.

• #1 Patellar Tendonitis (Jumper’s Knee) | Alexander Orthopaedics

  https://alexanderorthopaedics.com/patellar-tendonitis-jumpers-knee/

  Age: Jumper’s knee is more common in people in their teens, 20s, and 30s. […] Gender: Males are significantly more likely to develop patellar tendinopathy than females. […] Muscular imbalance or tightness: Having uneven muscle strength or tightness in the leg muscles can cause patellar tendonitis. […] Chronic illness: Having a chronic disease that weakens the tendon is also a risk factor. […] Obesity: Having more weight places an increased pressure on the knees, which can increase risk.

• #1 Infrapatellar Tendinitis – Children’s Health Issues – Merck Manual Consumer Version

  https://www.merckmanuals.com/home/children-s-health-issues/connective-tissue-disorders-in-children/infrapatellar-tendinitis

  Infrapatellar tendinitis is inflammation of the tendon under the kneecap (patella) caused by overuse of the knees. […] Infrapatellar tendinitis typically affects children aged 10 to 13 years. It is caused by injury due to physical activities that require jumping and the repetitive use of the knees such as figure skating and basketball or volleyball. The overuse of the knees causes very small tears and inflammation to occur in the tendon under the kneecap (patella).

• #1 Patellar Tendinopathy | NHS Lanarkshire

  https://www.nhslanarkshire.scot.nhs.uk/services/physiotherapy-msk/patellar-tendinopathy/

  Patellar tendinopathy occurs when the patellar tendon is overused /overloaded. […] It is not fully clear why some people develop patellar tendinopathy, but is normally due to several reasons: Repeated stress on the patellar tendon, Overweight individuals, A sudden increase in body weight, Tightness of leg muscles, Weakness in thigh muscles, Changing activity levels or progressing too quickly, Inappropriate footwear, Exercising on hard surfaces.

• #1 Patellar Tendonitis: Symptoms & Treatment | Mass General Brigham

  https://www.massgeneralbrigham.org/en/patient-care/services-and-specialties/sports-medicine/conditions/knee/patellar-tendonitis

  Patellar tendonitis is an injury to the tendon connecting your kneecap (patella) to your shinbone. […] Jumper’s knee is usually a sports-related injury that results from the repeated force of hitting the ground. Constantly contracting the leg muscle strains your tendon and, over time, can cause your tendon to weaken and become inflamed. […] Other patellar tendonitis risk factors beyond athletics include: Muscle tightness in your thigh muscles (quadriceps), hamstrings, and calf muscles can increase the strain on your patellar tendon. Strength imbalance between the muscles in your legs can cause the stronger ones to pull too hard and tear the patellar tendon. Chronic illnesses such as kidney failure, arthritis, and diabetes can disrupt blood flow to the knee and weaken the tendon, making it susceptible to tearing. Being overweight adds strain to the muscles and tendons in your legs. In rare cases, the use of fluoroquinolone antibiotics can lead to patellar tendinitis and subsequent patellar tendon rupture. […] Jumpers knee is another name for patellar tendonitis. This injury is caused by repeated jumping motions that strain the patellar tendon over time.

• #1 Patellar Tendonitis Overview

  https://m.mendmyknee.com/knee-and-patella-injuries/patellar-tendinitis.php

  Having diabetes, gout and/or para-hypothyroidism. […] Landing or falling heavily on your knees. […] Age – as we grow older, our tendons become more brittle and therefore prone to injury. […] Mis-alignment of the foot, ankle, and leg including flat feet, leg length discrepancy, tracking abnormalities etc.

• #1 Patellar tendinitis: What it is, symptoms, causes, evolution and treatment – Blog de Traumatología Deportiva Blog de Traumatología Deportiva Blog

  https://www.barnaclinic.com/blog/traumatologia-deportiva/en/2021/05/27/patellar-tendinitis/

  Chronic diseases: Some diseases interrupt blood flow to the knee, which weakens the tendon. Some diseases that could influence this are: kidney failure, autoimmune diseases, such as lupus or rheumatoid arthritis, and metabolic diseases such as diabetes. The latter factor is a less common cause of patellar tendinitis. What is proven is that smokers, having an alteration in blood capillarity, have a worse repair and healing process, so in these patients the healing process is much more difficult.

• #1 Understanding Patellar Tendonitis: Causes, Symptoms, and Treatment | Princeton Orthopaedic AssociatesVisit our FacebookVisit our InstagramVisit our LinkedInVisit our YouTube channelVisit our FacebookVisit our InstagramVisit our YouTube channelasterisksear

  https://www.princetonorthopaedic.com/understanding-patellar-tendonitis-causes-symptoms-and-treatment/

  Sudden Increase in Activity: A rapid increase in training intensity or duration without proper conditioning can overwhelm the tendon and lead to injury. […] Inadequate Recovery: Not allowing sufficient time for rest and recovery between intense training sessions can contribute to the development of patellar tendonitis.

• #1 Patellar Tendonitis Causes And Symptoms – Klarity Health Library

  https://my.klarity.health/patellar-tendonitis-causes-and-symptoms/

  If your footwear lacks the proper cushioning either due to age or being poor quality, when you are participating in sports and activities, impact forces in your lower limb, from jumping for example, can result in more force being exerted on your patellar tendon. This results in patellar tendonitis. […] For athletes, the type of playing surface is a risk factor for patellar tendonitis. One study found that 38% of those who played on concrete had patellar tendonitis, whereas athletes who played on other surfaces had a lower prevalence of patellar tendonitis, at 20%.

• #1 Exercises for Patellar Tendinitis

  https://vitalitytulsa.com/exercises-for-patellar-tendinitis/

  Patellar tendinitis, also known as jumpers knee, is a common knee injury that affects the tendon connecting your kneecap (patella) to your shinbone (tibia). This condition is characterized by inflammation and degeneration of the patellar tendon, often resulting from overuse or repetitive stress. Athletes, particularly those involved in sports that require frequent jumping, running, or abrupt changes in direction, are more susceptible to developing patellar tendinitis. […] Patellar tendinitis is typically caused by repetitive stress on the patellar tendon, which can lead to microscopic tears and subsequent inflammation. Some common causes include: […] Engaging in activities that place excessive stress on the knees, such as jumping, running, or cycling, can lead to patellar tendon injury. Over time, this can result in patellar tendonitis pain.

• #1 Common Causes of Patellar Tendonitis | Knee Pain | Airrosti

  https://www.airrosti.com/blog/common-causes-of-patellar-tendonitis/

  Patellar tendonitis occurs when the patellar tendon becomes inflamed due to overuse or repetitive stress. […] The leading cause of patellar tendonitis is overuse. Repetitive movements that put stress on the patellar tendon can lead to small tears and inflammation. […] While overuse is the primary cause, several other factors can contribute to the development of patellar tendonitis: Weakness or imbalances in the quadriceps and hamstring muscles can affect the alignment of the kneecap, placing additional stress on the patellar tendon. […] Improper movement or form during physical activities can increase the strain on the patellar tendon. […] Wearing inappropriate or worn-out footwear can alter the way your feet strike the ground, affecting the distribution of forces through the lower body. […] Switching from one training surface to another, especially from a softer surface to a harder one, can increase the risk of patellar tendonitis. […] Understanding the common causes of patellar tendonitis is the first step in prevention and effective management.

• #1 Causes of Patellar Tendinitis Plus Symptoms and Treatment

  https://boxhillchiro.com.au/conditions-treated/knee/patellar-tendinitis/

  Patellar tendinitis, also known as jumpers knee, is a condition that occurs when the patellar tendon, which connects the kneecap (patella) to the shinbone, becomes inflamed and painful. […] Patellar tendinitis is an overuse injury that is caused by repetitive stress on the patellar tendon. […] The following are some common causes of patellar tendinitis: […] Repeated stress on the patellar tendon from jumping and running can lead to small tears and degeneration of the tendon. […] An abrupt increase in the frequency, intensity, or duration of physical activity can put extra stress on the patellar tendon, leading to inflammation and pain. […] Tight muscles around the knee, particularly the quadriceps, can put extra stress on the patellar tendon, increasing the risk of injury. […] Improper jumping or landing techniques can put excessive stress on the patellar tendon, leading to injury. […] Muscle imbalances, particularly between the quadriceps and the hamstrings, can put extra stress on the patellar tendon. […] Wearing inadequate shoes or training on hard surfaces can increase the risk of developing patellar tendinitis.

• #1 Exercises for Patellar Tendinitis

  https://vitalitytulsa.com/exercises-for-patellar-tendinitis/

  Using incorrect form during physical activities can increase strain on the patellar tendon. […] Rapidly increasing the intensity or duration of physical activity without proper conditioning can contribute to patellar tendinitis. […] Weak or tight muscles around the knee, particularly the quadriceps muscle, can contribute to the development of patellar tendinitis. […] Wearing shoes that lack proper support can exacerbate stress on the knees, increasing the likelihood of knee pain and injury.

• #1 Patellar Tendonitis: Symptoms, Treatment, and More

  https://www.healthline.com/health/patellar-tendonitis

  Patellar tendonitis comes from repetitive stress on the knee, most often from overuse in sports or exercise. The repetitive stress on the knee creates tiny tears in the tendon that, over time, inflame and weaken the tendon. […] Contributing factors can be: tight leg muscles, uneven leg muscle strength, misaligned feet, ankles, and legs, obesity, shoes without enough padding, hard playing surfaces, chronic diseases that weaken the tendon. […] Long periods of intense sports training are associated with jumpers knee. A 2014 study noted that jump frequency was also an important risk factor for amateur volleyball players.

• #1 Patellar Tendinitis: Causes and Symptoms – Orthopedic & Sports Medicine

  https://orthosportsmed.com/patellar-tendinitis/

  Patellar tendinitis is a common overuse injury, caused by repeated stress on your patellar tendon. […] The stress results in tiny tears in the tendon, which your body attempts to repair. […] But as the tears in the tendon multiply, they cause pain from inflammation and weakening of the tendon. […] A combination of factors may contribute to the development of patellar tendinitis, including: […] Running and jumping are most commonly associated with patellar tendinitis. […] Sudden increases in how hard or how often you engage in the activity also add stress to the tendon, as can changing your running shoes. […] Tight thigh muscles (quadriceps) and hamstrings, which run up the back of your thighs, can increase strain on your patellar tendon. […] If some muscles in your legs are much stronger than others, the stronger muscles could pull harder on your patellar tendon. […] Some illnesses disrupt blood flow to the knee, which weakens the tendon.

• #1 Patella Tendonitis | Lurie Children’s

  https://www.luriechildrens.org/en/specialties-conditions/patella-tendonitis/

  Patellar tendonitis is the condition that arises when the tendon and the tissues that surround it become irritated and painful from overuse, especially from jumping activities. […] Patellar tendonitis is a common injury caused by overuse and stress on the patellar tendon. The repetitive stress causes tiny tears deep in the tendon that the body attempts to repair. […] Occasionally the symptoms may be caused by sudden injury to the tendon; however, this is much less common.

• #1 Patellar Tendinitis — The Knee and Shoulder Centers

  https://www.kneeandshouldermd.com/pat

  Patellar Tendinitis is an extremely common malady that can plague almost anyone, from athletes to laborers. […] Such exertions subject the knee to high shock-impact forces, which are one of the apparent causes of patellar tendinitis. […] For unknown reasons, the insertion (attachment) of the middle fibers of the patellar tendon to the lower border of the patella is particularly vulnerable to mechanical irritation, inflammation and ultimately tendon fiber degeneration and breakdown. […] Under the microscope, the disease process associated with jumper’s knee is characterized by cellular inflammation and degenerative breakdown of tendon fibers directly where the tendon attaches to the patella, and in more advanced cases, within the upper third of the tendon itself. […] One common cause of patellar tendinitis is a direct contusion or impact blow, such as may occur when you fall down onto the frontal aspect of your knee, or if you strike the front of your knee on an unseen object while walking.

• #1 Patellar Tendinitis: Symptoms, Causes, Diagnosis & Treatments

  https://aidyourtendon.com/tendinitis-injuries/knee-tendonitis/patella-tendonitis.php

  Patella tendonitis (also known as Jumper’s Knee and Sinding-Larsen-Johansson disease) is a painful condition affecting the patellar tendon (also called the patellar ligament or anterior ligament) in the knee joint. […] Inflammation in the patellar tendon is often due to irritation and/or micro-tearing of the collagen fibers. […] This makes tendons prone to micro-tearing and inflammation if they are strained or overused. […] Acute tendonitis refers to inflammation that comes on suddenly, usually from a tendon strain or overloading it during exercise. Chronic tendonitis occurs over time and generally results from long term repetitive use of the patella tendon. […] Patella Tendonitis can be caused by repetitive use of the patellar tendon, but can also be caused by trauma such as a blow to the knee.

• #1 Patellar Tendinitis & Jumper’s Knee | Treatment & Exercises

  https://stretchcoach.com/articles/patellar-tendinitis/?srsltid=AfmBOoocIWgZYzqhBZIHlCOaedcZZGzzcxJ2TkjLlgPgi2qJDNctUHqV

  Patellar tendinitis is common among running related sports. However, it doesn’t normally occur in an instant, like an ankle sprain or hamstring strain, but starts off as a dull ache, and progresses quickly to a sharp, debilitating knee pain. […] Overuse is the major cause of patellar tendinitis. Activities that involve a lot of jumping and rapid change of direction are particularly stressful to the patellar ligament. Participants of basketball, volleyball, soccer, and other running related sports are particularly vulnerable to patellar tendinitis. […] Patellar tendinitis can also be caused by a sudden, unexpected injury like a fall. Landing heavily on your knees can damage the patellar ligament, which can lead to patellar tendinitis.

• #1 What Causes Patellar Tendinitis?

  https://www.icliniq.com/articles/neurological-health/patellar-tendinitis

  Patellar tendinitis is caused by overuse or repetitive stress on the knee. The most common causes include sports or exercise. This repetitive stress results in tiny tears in the patellar tendon, which inflames and weakens over time. […] When a person lands heavily on the knee, it results in excess stress on the tendon, causing tiny tears. These tears cause inflammation, which usually heals fast. But repeated injury can result in permanent damage.

• #1 Patellar Tendinitis Treatment Irvine, San Clemente | Jumper’s Knee Orange, Mission Viejo CA

  https://www.orangeorthopaedics.com/patellar-tendinitis-orthopaedic-treatments-irvine-ca/

  Patellar tendinitis, also known as „jumper’s knee”, is an inflammation of the patellar tendon that connects your kneecap (patella) to your shinbone. This tendon helps in extension of the lower leg. […] Patellar tendinitis usually results from repetitive trauma or overuse, particularly from sports activities involving jumping such as basketball or volleyball. Therefore, this condition is also known as jumpers knee. Rarely, this condition may also occur because of an acute injury to the tendon that has not healed properly.

• #1 Patellar Tendinitis Connecticut | Jumper’s Knee Treatment Farmington, Connecticut

  https://www.coryedgarmd.com/patellar-tendinitis-orthopaedic-sports-medicine-specialist-storrs-ct/

  Patellar tendinitis usually results from repetitive trauma or overuse, particularly from sports activities involving jumping such as basketball or volleyball. […] Rarely, this condition may also occur because of an acute injury to the tendon that has not healed properly.

• #1 Patellar Tendonitis – Treatments & Symptoms | Massachusetts General Hospital

  https://www.massgeneral.org/orthopaedics/sports-medicine/conditions-and-treatments/patella-tendinitis

  The most common knee tendonitis is irritation of the patellar tendon. Commonly called „jumpers knee,” patellar tendonitis is an inflammation of the tendon that attaches the patella (kneecap) to the tibia (shin bone). […] Inflammation of the patellar tendon can happen due to overuse of the knee or repeated hard impacts. Repetitive activity, such as jumping, running or other high-impact movements, can cause micro-failure of the tendon tissue that leads to patellar tendonitis. Small tears in the tendon can weaken the knee and cause swelling, inflammation and pain. […] Patellar tendonitis is commonly known as jumper’s knee. The name highlights the stress placed on the knee when jumping and the type of activities that frequently contribute to the onset of patellar tendonitis.

• #1 Patellar Tendonitis Causes And Symptoms – Klarity Health Library

  https://my.klarity.health/patellar-tendonitis-causes-and-symptoms/

  Patellar tendonitis, also referred to as patellar tendinopathy, or jumpers knee, is a common occurrence in athletes who participate in jumping sports, for example, volleyball and basketball. […] Patellar tendonitis occurs when the patellar tendon has repeated stress applied to it and is overused. This results in too much pressure being applied to the patellar tendon, which results in small tears in the patellar tendon, known as micro injuries. These micro injuries change the structure of the patellar tendon. […] Repeated stress on your patellar tendon can result in patellar tendonitis. This has been demonstrated to be a common cause of patellar tendonitis in recreational and professional athletes, occurring typically in those who participate in the following: Football, Volleyball, Long-distance running, Ice-hockey, Basketball.

• #1

  https://www.orthobullets.com/knee-and-sports/3015/patellar-tendinitis

  Patellar tendinitis is tendinopathy of the patellar tendon associated with activity-related anterior knee pain. […] Pathophysiology includes a mechanism of repetitive, forceful, eccentric contraction of the extensor mechanism. […] Histology shows degenerative, rather than inflammatory changes, with micro-tears of the tendinous tissue commonly seen.

• #1 Patellar Tendonitis (Jumper’s Knee) | Frisco, TX | Orthopedic Surgeon

  https://doldmd.com/knee-conditions/patellar-tendonitis-jumpers-knee/

  Patellar tendonitis, often referred to as Jumpers Knee, is a common injury seen in the orthopedic and sports medicine clinic. The hallmark features of patellar tendinitis are: (1) pain localized to the inferior pole of the patella and (2) load-related pain that increases with increasing use of the knee extensors, notably in activities that store and release energy in the patellar tendon (ex. jumping or running). […] Patellar tendonitis results from constant mechanical stress exerted on the extensor mechanism that aids in jumping and extending the knee. This constant mechanical stress leads to micro-trauma of the tendon that causes cellular damage and leads to small tears within the tendon. This cellular damage is what activates the inflammation process and causes pain with activity. […] Minor sports injuries like patellar tendonitis often go unreported, this makes it hard to determine the frequency of patellar tendon injury. However, there has been a high prevalence of tendinosis related to the increase in jumping sports such as volleyball, basketball, as well as long and high jumping.

• #1 Etiology of Patellar Tendinopathy in Athletes in: Journal of Sport Rehabilitation Volume 14 Issue 3 (2005)

  https://journals.humankinetics.com/view/journals/jsr/14/3/article-p259.xml

  To review the etiology of patellar tendinopathy as it relates to clinical management of chronic patellar-tendon disease in athletes. […] The etiology of patellar tendinopathy is multifactorial, incorporating both intrinsic and extrinsic factors. Age, muscle flexibility, training program, and knee-joint dynamics have all been associated with patellar tendinopathy. […] The pathoetiology of patellar tendinopathy is a complex process that results from both an inflammatory response and degenerative changes. There is a tremendous need for research to improve our understanding of the pathoetiology of patellar tendinopathy and its clinical management.

• #1 Patellar tendinitis // Middlesex Health

  https://middlesexhealth.org/learning-center/diseases-and-conditions/patellar-tendinitis

  Patellar tendinitis is a common overuse injury, caused by repeated stress on your patellar tendon. The stress results in tiny tears in the tendon, which your body attempts to repair. […] But as the tears in the tendon multiply, they cause pain from inflammation and weakening of the tendon. When this tendon damage persists for more than a few weeks, it’s called tendinopathy.

• #1 Jumpers Knee – StatPearls – NCBI Bookshelf

  https://www.ncbi.nlm.nih.gov/books/NBK532969/

  Patellar tendinopathy is mainly a clinical diagnosis made through a detailed history and meticulous physical examination. […] There is currently insufficient evidence for preventative interventions specific to patellar tendinopathy. The most commonly employed measures include static stretching, core stability training, foot orthotics, insoles (shock absorbent), and hormone replacement therapies for females.

• #1 Patellar Tendonitis (Jumper’s Knee) | Frisco, TX | Orthopedic Surgeon

  https://doldmd.com/knee-conditions/patellar-tendonitis-jumpers-knee/

  The diagnosis of patellar tendonitis can usually be made in the clinical setting with a good history and physical exam. The patient will report an increase in activity that is associated with jumping as well as a slow increase in pain along the anterior aspect of the knee with no apparent injury or trauma. […] Treatment is primarily aimed at conservative care with anti-inflammatory medications (NSAIDS), injections (PRP or orthobiologics), and physical therapy. It is important to establish the diagnosis early and get ahead of the condition as it can become a progressive worse disease if left untreated (patella tendonitis becoming patella tendinopathy). […] In our experience, surgical management is rarely required for the management of patella tendonitis. This is usually reserved for patients who have partial interstitial tears within the tendon and continue to have pain at rest, despite an extended period of conservative care and physical therapy.

• #2 Patellar Tendinitis (Jumper’s Knee): Symptoms & Treatment

  https://my.clevelandclinic.org/health/diseases/patellar-tendonitis-jumpers-knee

  Patellar tendinitis happens when repeated movements (like jumping) gradually weaken the patellar tendon in your knee. […] Patellar tendinitis is a repetitive strain injury. Overusing your knee and putting too much repeated stress on your patellar tendon causes it. […] Repeated wear and tear (like jumping a lot or sprinting often) can make tiny tears in your tendon. […] The damage that causes patellar tendinitis builds up slowly over time. […] A sudden, intense increase in physical activity: If you start a new sport or quickly ramp up how intensely you train, your body may not be ready for the abrupt increase in your activity level. […] Not resting enough or doing an activity too often: Your body needs time to rest and recover between sessions of intense physical activity. Training or using your knees too often doesnt give your patellar tendon the time it needs to heal.

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