Materiały źródłowe

• #1 Hamstring Strain Injuries: Recommendations for Diagnosis, Rehabilitation and Injury Prevention

  https://pmc.ncbi.nlm.nih.gov/articles/PMC2867336/

  The greatest musculotendon stretch is incurred by the biceps femoris, which may contribute to its tendency to be more often injured than the other 2 hamstring muscles (semimembranosus and semitendinosus) during high-speed running. […] The mechanism of injury, and subsequent tissues injured, have been shown to have important prognostic value in estimating the rehabilitation time needed to return to pre-injury level of performance. […] Injuries involving an intramuscular tendon or aponeurosis and adjacent muscle fibers (biceps femoris during high-speed running) typically require a shorter convalescent period than those involving a proximal free tendon (semimembranosus during dance and kicking). […] Severe injuries, such as complete or partial ruptures of the hamstring muscles, typically result from extreme and forceful hip flexion with the knee fully extended (eg, water skiing), and often require operative intervention with extensive post-surgical rehabilitation.

• #1 Hamstring injury

  https://www.nhs.uk/conditions/hamstring-injury/

  A hamstring injury is a strain or tear to the tendons or large muscles at the back of the thigh. […] The 3 grades of hamstring injury are: grade 1 a mild muscle pull or strain, grade 2 a partial muscle tear, grade 3 a complete muscle tear. […] The length of time it takes to recover from a hamstring strain or tear will depend on how severe the injury is. […] A minor muscle pull or strain (grade 1) may take a few days to heal, whereas it could take weeks or months to recover from a muscle tear (grade 2 or 3). […] Mild hamstring strains (grade 1) will usually cause sudden pain and tenderness at the back of your thigh. […] Partial hamstring tears (grade 2) are usually more painful and tender. […] Severe hamstring tears (grade 3) will usually be very painful, tender, swollen and bruised, making it difficult to walk and stand.

• #1 Hamstring Injury: Recovery Time, Treatment & Symptoms

  https://my.clevelandclinic.org/health/diseases/17039-hamstring-injury

  Athletes and people who sprint, climb, jump or lunge are at a higher risk of a painful hamstring injury. It can take a few days to heal or as long as a few months, depending on the severity of the injury. Higher grade hamstring injuries will cause more severe and noticeable symptoms. The most common hamstring muscle injury symptoms include: A bump or knot in your muscle that you can see or feel, Bruising, Feeling or hearing a pop (more common with higher-grade injuries), Muscle spasms, Muscle stiffness, Pain on the back of your thigh (especially when you move or use your leg), Pain where your hamstring meets your butt when you’re sitting down (you may feel better when you lean your weight off that side), Swelling, Tenderness, Trouble moving your leg. The pain from a hamstring injury may spread (radiate) from the back of your leg into your groin, butt or other parts of your leg. Higher grade strains will cause more severe and noticeable symptoms. Grade 2 and Grade 3 strains usually cause a loss of strength in your affected hamstring. It depends on how severe the original injury is. Lower-grade hamstring tears will heal faster than more severe injuries. If you have a grade 1 injury, you might need less than a week to feel better. Grade 2 and grade 3 injuries will take longer to heal. It can take up to several months. Injured hamstrings usually tighten up as they heal.

• #1 Hamstring Strain Injury: Symptoms and Treatment

  https://www.901pt.com/post/hamstring-strain-injury-symptoms-and-treatment

  Have you ever felt the back of your thigh spasm? Did you ever feel a pop and have difficulty with running or walking shortly after? […] Have you noticed increased tightness in your posterior thigh that is limiting your stride? Does it feel weaker than your other leg? Ever noticed swelling or bruising? […] If you answered „yes” to most of those questions, then you may have a hamstring strain. […] Strains typically occur with higher-level physical activity like sprinting, or fast stop and go movement seen in basketball, football, soccer, and rugby. Strains are also commonly seen in runners. […] Grade 1 Strain- Mild, only a few fibers have been injured. Walking will likely be unaffected, you may feel minimal symptoms with sprinting. […] Grade 2 Strain- Moderate, a partial muscle tear up to half of the muscle. You may experience a limp with walking, and running may not be an option due to weakness and pain.

• #1 Hamstring Muscle Injuries – OrthoInfo – AAOS

  https://orthoinfo.aaos.org/en/diseases–conditions/hamstring-muscle-injuries/

  If you strain your hamstring while sprinting in full stride, you will notice a sudden, sharp pain in the back of your thigh. It will cause you to come to a quick stop, and either hop on your good leg or fall. […] Additional symptoms may include: swelling during the first few hours after injury, bruising or discoloration of the back of your leg below the knee over the first few days, weakness in your hamstring that can persist for weeks. […] Most hamstring strains heal very well with simple, nonsurgical treatment. […] Rehabilitation for a proximal hamstring repair typically takes at least 6 months, due to the severity of the injury. […] Distal hamstring repair requires approximately 3 months of rehabilitation before returning to athletic activities. […] Most people who injure their hamstrings will recover full function after completing a rehabilitation plan. Early treatment with a plan that includes the RICE protocol and physical therapy has been shown to result in better function and quicker return to sports.

• #1 Hamstring injury – Symptoms and causes – Mayo Clinic

  https://www.mayoclinic.org/diseases-conditions/hamstring-injury/symptoms-causes/syc-20372985

  A hamstring injury typically causes a sudden, sharp pain in the back of the thigh. There might also be a „popping” or tearing sensation. […] Swelling and tenderness usually develop within a few hours. There might be bruising or a change in skin color along the back of the leg. Some people have muscle weakness or are not able to put weight on the injured leg. […] Returning to tiring activities before hamstring muscles are completely healed might cause the injury to happen again.

• #1 Symptoms of Hamstring Strain

  https://aidyourhamstring.com/hamstring-strain/hamstring-strain-symptoms.php

  Occasionally, bruising (hamstring contusion) and discoloration over your hamstring muscle may appear immediately or after a few days with severe hamstring strains. […] You may experience stiffness or decreased range of motion (ROM) as a result of a pulled hamstring muscle. The tightness at the back of your thigh will make it difficult to flex your knee or straighten your leg. Your gait may be affected, or you may limp when you walk if the stiffness causes discomfort. […] A sharp pain or twinges may be felt along the length of your hamstring or at a specific point on the back of your thigh. […] You may experience tenderness and/or muscle spasms in your hamstring muscle during active and resistive movements. Pain often increases when pressure is applied to the injured hamstring muscles.

• #1 Hamstring Injuries: Causes, Symptoms, and Treatment – The Fascia Institute

  https://fasciainstitute.org/services/hamstring-treatment/hamstring-injuries/

  Grade I (Mild Strain): Slight discomfort and stiffness in the back of the thigh, minimal swelling, tightness when bending or extending the leg. […] Grade II (Partial Tear): Moderate pain, particularly when trying to move or walk, swelling and bruising around the back of the thigh, difficulty bending or straightening the knee. […] Grade III (Complete Tear): Severe pain and a popping sensation at the time of injury, inability to bear weight or move the affected leg, visible deformity in the thigh due to muscle tearing. […] Proper diagnosis is crucial for determining the severity of a hamstring injury and developing an effective treatment plan. […] Recovery times for hamstring injuries vary depending on the severity of the injury and the type of treatment used. […] Grade I (Mild Strain): Recovery time: 1-2 weeks.

• #1 Grades of Hamstring Pulls

  https://m.aidyourhamstring.com/pulled-hamstring/pulled-hamstring-progression.php

  A pulled hamstring is classified into 3 grades of hamstring strain severity: […] Grade 1 (Minor) Hamstring Strains involve slightly pulled or excessively stretched muscles, or very small tears in your muscles. You will generally feel some specific point pain, tightness or mild cramping in your hamstring which will be a little uncomfortable, but will involve no swelling or no major loss of strength. […] Grade 2 (Moderate) Hamstring Strains are more painful and involve a partial tearing of the hamstring fibers in your muscles, tendons, or at the tendon attachment to your bone. You will generally experience some pain that radiates down your leg during activity, while bending your knee against resistance, or when you touch your hamstring. Swelling, stiffness, decreased strength and range of motion (may not be able to straighten knee) will be apparent and can also cause you to limp.

• #1 5 Common Pulled Hamstring Symptoms – What Is a Hamstring Strain? – What Causes a Hamstring Strain? – What Does a Hamstring Cramp Feel LIke?

  https://redrocktherapy.com/5-common-symptoms-of-a-hamstring-strain/

  Level one The first level is also known as grade 1 hamstring strain is mild compared to others. With this you may feel tightness in the back thigh, but it will not affect your mobility. However, your full speed will be greatly affected due to the discomfort. There may also be a little swelling in the affected leg. […] Level two At this second grade hamstring strain, you may find yourself limping and unable to walk easily. You will also feel sharp pain with every movement you make. And when you try to bend the knee, you will feel a lot of pain on the hamstring muscle. […] Level three A grade 3 hamstring strain is very serious and warrants immediate and proper attention. This may be characterized by tear in part of the muscle or all of it. It comes with severe pain, paralyzing walking ability completely. The muscle becomes weak and there is visible swelling and bruising within 24 hours.

• #1 Hamstring Strain (for Teens) | Nemours KidsHealth

  https://kidshealth.org/en/teens/hamstring-strain.html

  Most people who strain their hamstring have a sudden sharp pain and possibly a popping or warm sensation at the back of the leg. […] Other symptoms of a hamstring strain may include: pain in the back of your thigh when you bend or straighten your leg, tenderness, swelling, and bruising in the back of the thigh, weakness in your leg. […] Hamstring strains can be mild, with little pain and a short recovery time. Or, they can be severe and need surgery and crutches for weeks. […] Grade 1: This is a mild strain. You may have some pain when you use your leg, but it will be minor and there will be minimal swelling. […] Grade 2: This is a partial tear of one or more of the hamstring muscles. This may cause you to limp when you walk and feel some pain during activity. You might see some swelling and bruising, and some loss of strength. […] Grade 3: This is a complete tear of one or more of the hamstring muscles. You’ll feel pain and not be able to straighten your leg all the way, and you’ll notice swelling and bruising. It will be very hard to walk, and you might need crutches.

• #1 Hamstring Strain | Sports Medicine Australia

  https://sma.org.au/resources/injury-fact-sheets/hamstring-strain/

  One of the most common injuries in sport is the hamstring strain, as the hamstring muscles are very susceptible to tears and strains. […] Acute hamstring strains occur due to a sudden movement or force being applied to the hamstring muscles. The player is immediately aware of the condition. Sometimes players hear an audible pop. […] Hamstring strains are classified as Grade 13 strains depending on severity. A hamstring strain may occur in one or more of the three muscles in the group. […] Grade 1 (mild): Symptoms may not present until activity is over. Increased tightness in the muscle during stretch or through a full range of motion. A feeling of pain may be reported with sitting or while walking uphill or ascending stairs. […] Grade 2 (moderate): Pain is more immediate and more severe than the pain of a Grade 1 strain. Limping is likely during walking, and occasional sudden twinges of pain during activity may occur.

• #1 Strained Hamstring: Symptoms and Treatment | IBJI

  https://www.ibji.com/blog/sports-medicine/strained-hamstring-symptoms-and-treatment/

  When walking or bending over you may feel pain in the back of the thigh and lower buttock. […] Tenderness and bruising along the back of the legs and muscle bulk. […] Even a mild strain can become a big problem if untreated. There is a grade accorded to the pulled hamstring from 1 to 3, depending on the severity of the injury. […] Grade 1 Hamstring Strain […] May experience some hamstring discomfort. […] There will be some tightness in the back of the thigh. […] You may see mild swelling and feel spasms. […] Bending your knee will not result in any pain. […] Grade 2 Hamstring Strain […] You may not be able to walk normally and will most likely be limping. […] Any activity may cause sudden twinges of hamstring pain. […] There will be tenderness in hamstring muscles, swelling and palpable pain.

• #1 Symptoms of Hamstring Strain

  https://aidyourhamstring.com/hamstring-strain/hamstring-strain-symptoms.php

  It is possible to experience only mild pain when walking even if a tear in the muscle occurs, however, pain will increase if strenuous exercise is attempted. An avulsion, or complete tear causes extreme pain, even during rest. The torn tissue may bunch in the back of the thigh causing even more pain when the leg is bent. […] If you have a chronic injury, you may feel more of a dull ache that lasts for long periods of time. Pain can be experienced while sitting or walking up or down stairs/hills. […] A popping or snapping sensation at the back of your thigh can often be heard and felt when your hamstring muscles are tearing. This often happens with a large force of hip flexion when your knee is extended (straightened) and may cause you to fall to the ground.

• #1 Hamstring Tear or Strain | Orthopedics | Mercy Health

  https://www.mercy.com/health-care-services/orthopedics-sports-medicine-spine/specialties/knee-leg/conditions/hamstring-tear-strain

  A hamstring tear or strain, also called a pulled hamstring, is an injury to one of the back muscles in the back of the thigh. These injuries are common with athletes who participate in sports where they must sprint. […] The immediate symptom of a hamstring tear or strain is a sudden, sharp pain in the back of the upper leg. The pain may be so severe it stops you from continuing your activity. […] Symptoms depend on the grade of the tear: Grade 1 tightness in the muscle while stretching, inability to fully move your leg from bending to straightened, and inability to bear weight on the leg affected. Grade 2 reduced muscular strength, limping when walking, and pain when bending the knee. Grade 3 a severe, sudden, sharp pain in the back of the thigh, inability to extend the knee more than 30 to 40 degrees, inability to walk without pain, and severe bruising around the impacted area. […] Mild to moderate (grade 1 or 2) tears or strains can heal within three to eight weeks with diligent home therapy. For a grade 3 hamstring tear or strain, recovery may be as long as three months.

• #1 Grades of Hamstring Pulls

  https://m.aidyourhamstring.com/pulled-hamstring/pulled-hamstring-progression.php

  Grade 3 (Severe) Hamstring Strains involve a complete tear (rupture) of your hamstring muscle fibers where your muscle belly attaches to your tendon or where your muscle belly rips in 2 separate pieces. It is very painful and rarer than the other strains. You will tend to experience a burning or stabbing pain, a lot of swelling and minimal strength, which may prevent you from walking without assistance or make it difficult for you to move your leg. […] If you continue to experience the hamstring injury symptoms and have tried the suggested conservative treatments for 2-3 weeks, it is recommended that you seek professional medical attention. […] It is recommended you seek immediate attention if you: hear a „loud pop” in your muscle when injured, have immediate severe pain, swelling or discoloration in your hamstrings, experience severe weakness in your leg (compared to other leg) and have difficulty walking, have a temperature over 100.4 F (38 C), notice blue toe nails, numbness or coldness below your injury.

• #1 Hamstring Injuries: Causes, Symptoms, Diagnosis and Treatment

  https://carrothersorthopaedics.co.uk/hamstring-injuries-causes-symptoms-diagnosis-treatment/

  If you pull a hamstring muscle, you will feel a sudden, sharp pain at the back of your thigh which may be accompanied by a tearing or popping sensation. You may see an abnormal lump or indentation at the back of your thigh and/or bruising and swelling. The muscles may feel weak and it might be difficult to put any weight on the affected leg. Hamstring injuries can make it hard to straighten or bend your knee, which may force you to walk stiffly, keeping your legs straight. You may experience a burning or stinging sensation behind your thigh (gluteal sciatica). […] Hamstring injuries are generally graded from one to three mild to severe. […] A grade 1 injury means the muscles overstretch but dont tear. With this type of injury you can normally put weight on your leg. […] A grade 2 injury is a partial tear of the muscle or muscles. Your leg may be very painful and swollen which may prevent you from putting weight on your leg. […] A grade 3 hamstring injury is when the muscles tears away from the tendon or bone altogether and a piece of bone may even be pulled away (avulsion). This is the most severe form of hamstring injury.

• #1 Recognizing and treating hamstring strains: Symptoms, recovery, and more

  https://www.exakthealth.com/en-US/blog/hamstring-strain-diagnosis-and-treatment

  Our bodies heal acute injuries, like hamstring strains, through a 3-step healing process. […] The final healing step is called the remodeling phase and can last anywhere from 4 weeks to more than 12 weeks for a more severe strain. […] The most effective treatment for hamstring strains is the right combination of rest and exercise. […] Your injured hamstring requires a period of rest to allow the injury to settle and healing to start. […] Rehab exercises help restore your injured hamstrings’ strength and flexibility. […] Ice can be helpful immediately after injury as it can help limit internal bleeding and swelling. […] Avoid heat during the first 7 days of injury. […] It is best to avoid using anti-inflammatory medication (like ibuprofen) when you have a hamstring strain. […] Avoid massage for the first 7 days of injury. […] Remember, each hamstring injury is unique, and so is the healing process. […] Whether it’s a mild pull or a more severe tear, the key to recovery lies in balancing rest and rehabilitation exercises.

• #1 Hamstring injury

  https://www.nhs.uk/conditions/hamstring-injury/

  Recovering from a hamstring injury may take days, weeks or months, depending on how severe it is. […] A completely torn hamstring may take several months to heal and you’ll be unable to resume training or play sport during this time. […] Returning to strenuous exercise too quickly could make your injury worse, but avoiding exercise for too long can cause your hamstring muscles to shrink and scar tissue to form around the tear. […] Many people need to avoid sports for at least a few weeks, but the length of time you need off will depend on the severity of your injury.

• #1 Hamstring Strength and Morphology Progression after Return to Sport from Injury

  https://pmc.ncbi.nlm.nih.gov/articles/PMC3580023/

  Hamstring strain re-injury rates can reach 30% within the initial two weeks following return to sport (RTS). Incomplete recovery of strength may be a contributing factor. However, relative strength of the injured and unaffected limbs at RTS is currently unknown. The injured limb showed a peak torque deficit of 9.6% compared to the uninjured limb at RTS (60/s, p0.001), but not 6-months following. MRI revealed that 20.4% of the muscle cross-sectional area showed signs of edema at RTS with full resolution by the 6-month follow-up. Residual edema and deficits in isokinetic knee flexion strength were present at RTS, but resolved during the subsequent six months. This occurred despite MRI evidence of scar tissue formation (increased tendon volume) and muscle atrophy, suggesting that neuromuscular factors may contribute to the return of strength. Persistent strength deficits have been observed in individuals with recurrent hamstring injuries, despite returning to athletic competition. For example, in comparison to the unaffected limb, a 10% reduction in concentric peak torque was noted in subjects having experienced injury two to 12 months prior, with a 22% strength deficit during eccentric testing. The strength deficit present at the time of RTS is likely related to the remaining muscle injury observed on MRI (T2-hyperintensity). On average, 20% of the muscles cross-sectional area showed signs of injury at RTS with the MRI performed an average of 26 days post-injury (range, 1349 days). Six months following RTS, this strength deficit resolved, despite the ST and biceps femoris muscles of both limbs experiencing 45% atrophy.

• #1 Hamstring Injury: Hamstring Strain Symptoms, Causes, and Treatments

  https://www.webmd.com/fitness-exercise/hamstring-strain

  Mild hamstring strains may not hurt too much. But severe ones can be extremely painful, making it impossible to walk or even stand. […] Other possible symptoms of a hamstring strain are: Sudden and severe pain during exercise, along with a snapping or popping feeling; Pain in the back of the thigh and lower buttock when walking, straightening the leg, or bending over; Tenderness; Bruising. […] Recovery time depends on how badly you injured the hamstring. Keep in mind that people heal at different rates. Typically, recovery from a grade 1 strain the mildest injury takes just a few days. More serious injuries grades 2 and 3 could require weeks, even months, to fully heal.

• #1 Hamstring Injury | Symptoms and Recovery | OrthoIndy Blog

  https://blog.orthoindy.com/2020/12/15/hamstring-injury-symptoms-recovery-and-treatment/

  In severe hamstring injuries, the tendons may tear completely away from the bone and even pull bone with it, known as an avulsion injury. […] A hamstring strain grade determines the severity of your injury. Grade 1 (pull): Mild, usually heals quickly, two to four weeks. Grade 2 (partial tear): Moderate, heals over four to eight weeks. Grade 3 (complete tear): Severe, often requires acute surgery or will take months to heal.

• #1 Hamstring Tear & Surgery | University of Utah Health

  https://healthcare.utah.edu/orthopaedics/specialties/hip-pain/hamstring-tear-surgery

  People who experience a hamstring tear usually experience: sudden, sharp pain in the back of their thigh, a popping sensation in their leg, tenderness around their muscle, swelling on the back of their leg a few hours after the injury, pain while sitting down, bruising within a few days, and weakness or instability in the injured leg. […] Symptoms of a complete hamstring tear are more severe. People often describe it as being shot in the upper leg or buttocks, or a sudden, stabbing pain. After a complete hamstring tear, you may not be able to put any weight on your leg or straighten your leg. […] Mild hamstring tears or strains (grade 1) and partial hamstring tears (grade 2) take three to eight weeks to heal. […] Complete hamstring tears (grade 3) take three to six months to heal after surgery.

• #1 Hamstring injury: treatment, recovery time and when to see a doctor – Institute of Sport, Exercise & Health

  https://iseh.co.uk/news/latest-news/hamstring-injury-treatment-recovery-time-and-when-to-see-a-doctor

  For tendon type injuries, it can take much longer because tendons take longer to heal this can take 6-12 weeks before athletes are ready to return to sport. […] The British Athletic Muscle Injury Classification (BAMIC) allows us to grade these injuries to allow rough guidelines on recovery. Simplifying the classification into mild, moderate, and severe injuries allows timelines of 3 weeks, 6 weeks, and 12 weeks for each grading.

• #1 Dual track hamstring injury rehab: Sprinting and strength training progressions – Sportsmith

  https://www.sportsmith.co/articles/dual-track-hamstring-injury-rehab-sprinting-and-strength-training-progressions/

  Eccentric training, crucial for hamstring rehab, increases muscle capacity and resilience, pivotal for returning athletes to peak performance. […] All reconditioning stays below a 4 on a pain scale of 0-10. Crossing this threshold when starting training or a new progression tells you that the intensity is too high and you need to regress. […] The exit criteria for Phase 1 are a normalized walking gate, 4/10 pain during extensive isometrics, and manageable swelling. […] The exit criteria for Phase 2 are 10% hamstring ROM asymmetry, including both passive and active 90/90 hamstring stretch and a straight leg raise; and hamstring strength asymmetry of 10% (measured with force plates) on a knee flexion isometric and a hip extension isometric. They must tolerate intensive loading and a proficiency in linear sprinting. […] The exit criteria for Phase 3 are maintaining all previous benchmarks, no pain with any activity, tolerating the loading demands of sport, and a clearance from the medical staff.

• #1 Evidence-Based Hamstring Strain Management — Oregon Running Clinic

  https://www.oregonrunningclinic.com/runners-life-blog/2022/6/8/evidence-based-hamstring-strain-management

  In all, runners with hamstring strains may take a few weeks to up to two years to recover. […] The average to return to play is 23 to 48 days with re-injury rates at 9.1% to 63.3%. […] There needs to be normal, pain-free walking before you start any kind of jogging or running. […] The course of progression will include plyometric training and agility training, plus running-specific drills such as A and B skips, lunge jumps, strides, bounding, and lateral lunge jumps. […] The biggest mistake you can do is return to running or exercising too quickly, especially under that eight-week range.

• #1 Proximal and Mid-Hamstring Strain/Tendon Tear | PM&R KnowledgeNow

  https://now.aapmr.org/proximal-and-mid-hamstring-straintendon-tear/

  Subacute/Chronic: Gradual onset of deep buttock pain, which may be vaguely localized. Can be associated with posterior thigh pain. Often worse with sitting. […] These injuries are often characterized by a significant improvement in pain, strength, and flexibility within the first week of injury, so it is important to inform individuals of this and encourage compliance with early activity restrictions to prevent delayed healing and/or recurrent injury. […] Fifty-nine percent of repeat hamstring injuries will occur within the first month of return to play (RTP). Isometric strength tends to return to level of the uninjured leg by about 20 days post-injury, while flexibility returns within about 50 days post-injury. Notably, dynamic strength deficits persist even after RTP. […] Hamstring mapping, a means of outlining the size and extent of hamstring injury, can be utilized to some degree to predict RTP. MRI can be used to grade the injury. In a study of professional athletes, RTP occurred at just over two weeks with grade 1 injuries, just over three weeks with grade 2 injuries, and over ten weeks with grade 3 injuries.

• #1 Hamstring Strain Injuries: Recommendations for Diagnosis, Rehabilitation and Injury Prevention

  https://pmc.ncbi.nlm.nih.gov/articles/PMC2867336/

  Hamstring strain injuries remain a challenge for both athletes and clinicians given the high incidence rate, slow healing, and persistent symptoms. […] Moreover, nearly one-third of these injuries recur within the first year following a return to sport, with subsequent injuries often being more severe than the original. […] This high reinjury rate suggests that commonly utilized rehabilitation programs may be inadequate at resolving possible muscular weakness, reduced tissue extensibility, and/or altered movement patterns associated with the injury. […] The occurrence of hamstring strain injuries during high-speed running is generally believed to occur during terminal swing phase of the gait cycle, a perception that is supported by the objective findings from 2 separate hamstring injury cases.

• #1 Hamstring Strain Injuries: Recommendations for Diagnosis, Rehabilitation and Injury Prevention

  https://pmc.ncbi.nlm.nih.gov/articles/PMC2867336/

  The primary goal of a hamstring rehabilitation program is to return the athlete to sport at prior level of performance with minimal risk of injury recurrence. […] While the age of the individual and a prior history of a hamstring strain have been consistently identified as injury risk factors, each is non-modifiable. […] Modifiable risk factors that have been suggested include hamstring weakness, fatigue, and lack of flexibility with a strength imbalance between the hamstrings (eccentric) and quadriceps (concentric) being most supported by evidence. […] The purposes of this clinical commentary are: 1) to describe the diagnostic examination of the acute hamstring strain injury with emphasis on tests and measures that have prognostic value; 2) to present a comprehensive rehabilitation guide based on existing evidence aimed at minimizing both the convalescent period and risk of injury recurrence.

• #1 Hamstring Strain Injury: Symptoms and Treatment

  https://www.901pt.com/post/hamstring-strain-injury-symptoms-and-treatment

  Grade 3 Strain- Severe, between half the fibers up to a complete rupture of the muscle belly or tendon. You may not be able to stand or walk. If there’s a tear in the muscle, swelling and bruising is typically present. In a complete tear, there should be an observable deformity when comparing both legs. […] If you answer yes to most of those questions and you are able to rule out other types of injury, then you may have a hamstring tear. […] In the first month of injury be sure to avoid excessive stretching and heavy muscle activation. Adding more trauma to an acute tear can make the injury worse and prolong the healing process. […] In the first few weeks of a significant tear, respect your injury. You should focus on reducing pain and maintaining range of motion. […] The purpose of this exercise is two-fold: to regain any lost range of motion and to normalize that motion. We want full pain free range of motion with this exercise.

• #1 Hamstring Strain Injuries: Recommendations for Diagnosis, Rehabilitation and Injury Prevention

  https://pmc.ncbi.nlm.nih.gov/articles/PMC2867336/

  Several factors have been suggested that likely contribute to the high rate of reinjury: 1) persistent weakness in the injured muscle; 2) reduced extensibility of the musculotendon unit due to residual scar tissue; and 3) adaptive changes in the biomechanics and motor patterns of sporting movements following the original injury. […] In addition to these injury-induced risk factors, modifiable risk factors that may have contributed to the original injury should be considered in the rehabilitation program. […] The addition of eccentric hamstring strength exercises as part of preseason and in-season training for elite soccer players reduced the incidence of hamstring strain injuries. […] Given the high incidence of hamstring strain injuries that occur across a variety of sports and activities and the substantial tendency for injuries to recur, the greatest impact may be achieved by developing improved techniques for preventing initial injury.

• #1 Proximal Hamstring Tear Symptoms | Benjamin Domb MD

  https://www.benjamindombmd.com/blog/proximal-hamstring-tear-symptoms/?bp=35110

  Proximal hamstring tears are painful injuries that occur to just about anyone. […] Symptoms of a proximal hamstring tear include pain in the back of the thigh, swelling, and reduced range of motion in the affected area. […] While proximal hamstring tendon tear symptoms vary by patient, some common symptoms help you identify the issue sooner rather than later, ensuring you get the treatment you need right away: Bruising in the area, Pain and tenderness in the back of your thigh, Poor leg control/coordination, Sharp pain that gets worse with activity, Thigh cramps, Weakness in the affected leg. […] These injuries usually begin with sharp pain in the back of the thigh, sometimes associated with an audible „pop” sound. […] If the pain is minor but gets worse with movement, you likely have a Grade 1 or 2 tear.

• #1 Chronic Hamstring Tendinopathy Boston, MA | Thigh Pain Waltham, Dedham, MA

  https://www.suzannemillermd.com/hamstring-tendinopathy-orthopedic-specialist-waltham-dedham-ma/

  Chronic hamstring tendinopathy is a condition characterized by a deep pain in the buttocks and upper part of the back of the thigh. […] Pain is one of the most common symptoms of chronic hamstring tendinopathy and is usually felt at the back of the hip on the sit bones, where the hamstring begins. You may experience: […] Buttock pain […] Pain while bending […] Pain while sitting […] Pain during repetitive physical activity or acceleration […] Thigh pain […] Muscle stiffness. […] Chronic hamstring tendinopathy responds slowly to conservative treatment methods and healing usually takes about 3-6 months.

• #1 Hamstring Tears: Signs and Symptoms

  https://www.sports-health.com/sports-injuries/leg-injuries/hamstring-tears-signs-and-symptoms

  Pain and discomfort when sitting. In avulsion type and proximal hamstring injuries, where the tendon breaks away from the pelvic bone, patients will commonly have sitting pain and discomfort. […] In the rare case of a distal avulsion, in which the hamstring tendon has torn away from the tibia or fibula, a patient may experience significant bruising and thickening of soft tissue that can be felt near the site of the injury, which results in an inability to walk without assistance.

• #1 Symptoms of Chronic High (Proximal) Hamstring Tendinopathy

  https://www.sports-health.com/sports-injuries/leg-injuries/symptoms-chronic-high-proximal-hamstring-tendinopathy

  Pain with acceleration or sprinting. Runners may notice that pain appears or gets worse while accelerating or sprinting. The pain is typically worse just prior to heal strike, when the hamstring is firing to slow the body down. In some cases, severe pain may prevent athletes from sprinting. […] Pain when bending at the hip. Similar to acute hamstring strains, chronic tendinopathy may cause pain at the ischial tuberosity, or sit bone, when the hip is fully flexed. An example of this would be pain with tying shoes or bending at the waist to pick something up off the ground. […] Occasionally the sciatic nerve may become irritated or entrapped by an affected tendons scar tissue, causing sciatica-like symptoms down the leg.

• #1 Symptoms of Chronic High (Proximal) Hamstring Tendinopathy

  https://www.sports-health.com/sports-injuries/leg-injuries/symptoms-chronic-high-proximal-hamstring-tendinopathy

  Patients with chronic high (proximal) hamstring tendinopathies will often complain of deep posterior hip/buttock pain of gradual onset aggravated by repetitive activities, such as running or biking and often will have pain that is worsened by prolonged sitting. […] Occasionally pain may radiate down the hamstring and be felt at the back of the thigh. […] Pain while sitting or pressing on the sit bones may be a symptom of proximal hamstring tendinopathy. […] Pain when sitting. Pressing or sitting down on the ischial tuberosity (sit bone) may be uncomfortable or even painful. […] Pain with repetitive activity. Biking, hiking, running and other repetitive activities can exacerbate the posterior pain. People with high (proximal) hamstring tendinopathy will often notice a pattern to their pain. For example, the pain may appear at the same time into a workout.

• #1 Hamstring Muscle Injuries – OrthoInfo – AAOS

  https://orthoinfo.aaos.org/en/diseases–conditions/hamstring-muscle-injuries/

  Hamstring muscle injuries such as a „pulled hamstring” occur frequently in athletes. They are especially common in athletes who participate in sports that require sprinting, such as track, soccer, basketball, and waterskiing. […] A pulled hamstring or strain is an injury to one or more of the muscles at the back of the thigh. Most hamstring injuries respond well to simple, nonsurgical treatments. […] A hamstring strain can be a pull, a partial tear, or a complete tear. […] Muscle strains are graded according to their severity. A grade 1 strain is mild and usually heals readily; a grade 3 strain is a complete tear of the muscle that may take months to heal. […] Most hamstring injuries occur in the thick, central part of the muscle (the muscle belly) or where the muscle fibers join tendon fibers.

• #1 Hamstring Injury Recovery Time, Treatment, Symptoms, Exercises

  https://www.medicinenet.com/hamstring_injury/article.htm

  Hamstring injuries usually occur with sudden lunging, running, or jumping, resulting in muscle injury. The sudden jerking pulls on the tissues of the hamstring muscle. It is commonly referred to as a „pulled hamstring.” Oftentimes, a „pop” is heard or felt by the injured athlete. A variable amount of pain is experienced immediately. The athlete is usually unable to continue and oftentimes cannot even stand. […] Examination of the individual with a hamstring injury reveals spasms, tightness, and tenderness. […] With a more severe injury, swelling and a black-and-blue or bruised appearance will follow. In some cases, a palpable defect (detectable by touching) will be present in the muscle. […] Tears and strains most often occur in the middle of the back of the thigh where the muscle joins its tendon or at the origin of the hamstring at the base of the buttocks (at the ischium).

• #1 Acute hamstring injury | Cause, symptoms & treatment

  https://www.physiocheck.co.uk/condition/18/acute-hamstring-injury

  Acute pain along the rear of the thigh, that generally occurs during exercise. […] Flexing the knee against resistance is painful. The pain can also be felt when running and sprinting. […] Stretching of the muscle is painful (touching the toes with the hands whilst keeping the knees straight in order to stretch the hamstrings). […] If a lot of fibres are torn, this can feel like a bite has been taken out of the muscle during the examination. […] The tear is sensitive to touch. […] Loss of strength. […] The affected muscle can contract and cause a cramping sensation. […] As the hamstrings attach to the sitting bones, the symptoms can also be experienced whilst sitting as this places pressure on the damaged structures. […] If bleeding occurs, a blue, dark area can be visible along the rear of the thigh. This can be felt as a thickening of the leg. Over time, the bruise will move downwards. This is simply due to gravity.

• #1 Hamstring Injury | Med Diagnostics Rehab

  https://www.meddiagnosticrehab.co/hamstring-injury.php

  Patients with a hamstring injury may experience any of all of the following symptoms, depending on the severity of the tear: […] Sudden pain during exercise […] Snapping or popping sensation […] Pain in back of thigh or lower buttock […] Tenderness and bruising at the site […] Weakness in the hip or knee […] Tingling sensation at the back of the thigh. […] Since the hamstring muscles make it possible to extend the leg straight behind the body and to bend the knee, pain during these movements may be a sign of a hamstring injury.

• #1 Hamstring Strain Injuries: Recommendations for Diagnosis, Rehabilitation and Injury Prevention

  https://pmc.ncbi.nlm.nih.gov/articles/PMC2867336/

  As stated above, the injury location and severity based on findings from the initial examination and MR imaging are useful at estimating the duration of rehabilitation required before the athlete returns to sport. […] Specifically, the following factors have been shown to require a greater convalescent period: 1) injury involving a proximal free tendon; 2) proximity of the injury to the ischial tuberosity; and 3) increased length and cross-sectional area of injury. […] Despite injuries that involve the intramuscular tendon and adjacent muscle fibers initially present as more severe (eg, greater tenderness to palpation, range of motion loss, and weakness), the convalescent period is typically less than injuries involving the proximal free tendon. […] The high recurrence rate of hamstring injuries has led to speculation regarding the appropriateness of commonly employed rehabilitation strategies.

• #1 Hamstring Tendonitis: Symptoms, Causes & Treatment

  https://my.clevelandclinic.org/health/diseases/22471-hamstring-tendonitis

  Hamstring tendonitis is usually the result of repetitive stress on the tendons in the back of your thigh. Overuse can make the tendon fibers irritated and inflamed. […] Symptoms of hamstring tendonitis may include: Dull aching around your buttocks, the back of your thigh, knee or lower leg (similar to the symptoms of sciatica). Leg stiffness when walking or bending your knee. Sharp pain if you suddenly overstretch your hamstring muscles or tendons. Swelling, especially right after an injury. Tingling that runs from your lower back down the back of your leg. Weakness in the back of your thigh. […] At-home treatments help most people find relief from hamstring tendon pain within a few days or weeks. Some people continue to have chronic hamstring tendonitis if theyre athletes or continue to do strenuous physical activity. After you have a tendon injury, youre more likely to injure the tendon again. Ask your healthcare provider about ways to prevent reinjury.

• #1 Hamstring Tear: Symptoms, Causes, Treatment, and More!: Elite Sports Medicine + Orthopedics: Orthopedics

  https://www.eliteorthopaedic.com/blog/hamstring-tear/

  The symptoms that you feel when you strain your hamstring will vary depending on severity of the injury. Most of the time, you with feel a sharp or sudden pain in the back of the leg. With more severe injuries, you may even feel popping, see bruising, or you may be unable to walk or bend your leg. […] A pulled hamstring often occurs when sudden twists or stops are made. This is why we commonly see athletes come in with a torn hamstring. […] A mild hamstring tear may be able to heal on its own. If you think you may have pulled your hamstring, be sure to use the RICE method. If your pain does not go away after three days, seek the help of a sports medicine specialist. […] If you pulled your hamstring and you are experiencing swelling/bruising, and it is difficult to move your leg, seek medical attention as soon as possible.

• #1 Hamstring injury: treatment, recovery time and when to see a doctor – Institute of Sport, Exercise & Health

  https://iseh.co.uk/news/latest-news/hamstring-injury-treatment-recovery-time-and-when-to-see-a-doctor

  Hamstring injuries are particularly problematic as they tend to recur and once a player has had one injury, they can often get subsequent injuries which are often worse than the initial injury. […] Hamstring injuries tend to be very common and can affect many players in running, kicking and pivotal sports such as football. […] Symptoms of a hamstring injury can often be managed at home but additional help is often needed if the patient experiences any of the following: bruising / or large amounts of pain, loss of power or strength, symptoms such as pins and needles or numbness. […] If the injury does not start to recover, it is important to have the muscle checked by seeking medical help. […] Low grade hamstring injuries can heal within several days to 1-2 weeks, which will then see them return to sport/activities. Larger injuries can take between 2 and 6 weeks for players to return to sport.

• #2 Dual track hamstring injury rehab: Sprinting and strength training progressions – Sportsmith

  https://www.sportsmith.co/articles/dual-track-hamstring-injury-rehab-sprinting-and-strength-training-progressions/

  61% of HSIs occur during sprinting, particularly during late swing and early stance phase. 30% are during open chain activities such as kicking, and 13% during closed chain activities such as landing or cutting. […] The most commonly injured muscle is the BF long head (79.6%), followed by the semimembranosus (13.4%), semitendinosus (8.6%) and BF short head (1.1%). […] HSIs are categorized grade 1 through 3. Grade 1 is characterized by a micro tear, slight pain with stretching, and minimal strength loss. This accounts for 70% of HSIs, with a layoff of 17 + 10 days. Grade 2 injuries are characterized by moderate tearing of the muscle fibers, intense pain with stretching, minimal edema, and significant weakness. These are 23% of all HSIs and have a layoff of 22 + 11 days. […] Grade 3 are the most severe: a complete tear of muscle or tendon, possible mass or depression of tear site, no ability to load leg, and significant edema. Only 3% of HSIs are grade 3, and the layoff is 73 + 60 days.

• #2 Hamstring injury – Symptoms and causes – Mayo Clinic

  https://www.mayoclinic.org/diseases-conditions/hamstring-injury/symptoms-causes/syc-20372985

  A hamstring injury typically causes a sudden, sharp pain in the back of the thigh. There might also be a „popping” or tearing sensation. […] Swelling and tenderness usually develop within a few hours. There might be bruising or a change in skin color along the back of the leg. Some people have muscle weakness or are not able to put weight on the injured leg. […] Returning to tiring activities before hamstring muscles are completely healed might cause the injury to happen again.

• #2 Symptoms of Hamstring Strain

  https://aidyourhamstring.com/hamstring-strain/hamstring-strain-symptoms.php

  It is possible to experience only mild pain when walking even if a tear in the muscle occurs, however, pain will increase if strenuous exercise is attempted. An avulsion, or complete tear causes extreme pain, even during rest. The torn tissue may bunch in the back of the thigh causing even more pain when the leg is bent. […] If you have a chronic injury, you may feel more of a dull ache that lasts for long periods of time. Pain can be experienced while sitting or walking up or down stairs/hills. […] A popping or snapping sensation at the back of your thigh can often be heard and felt when your hamstring muscles are tearing. This often happens with a large force of hip flexion when your knee is extended (straightened) and may cause you to fall to the ground.

• #2 Hamstring Strain (for Teens) | Nemours KidsHealth

  https://kidshealth.org/en/teens/hamstring-strain.html

  Most people who strain their hamstring have a sudden sharp pain and possibly a popping or warm sensation at the back of the leg. […] Other symptoms of a hamstring strain may include: pain in the back of your thigh when you bend or straighten your leg, tenderness, swelling, and bruising in the back of the thigh, weakness in your leg. […] Hamstring strains can be mild, with little pain and a short recovery time. Or, they can be severe and need surgery and crutches for weeks. […] Grade 1: This is a mild strain. You may have some pain when you use your leg, but it will be minor and there will be minimal swelling. […] Grade 2: This is a partial tear of one or more of the hamstring muscles. This may cause you to limp when you walk and feel some pain during activity. You might see some swelling and bruising, and some loss of strength. […] Grade 3: This is a complete tear of one or more of the hamstring muscles. You’ll feel pain and not be able to straighten your leg all the way, and you’ll notice swelling and bruising. It will be very hard to walk, and you might need crutches.

• #2 Hamstring Muscle Injuries – OrthoInfo – AAOS

  https://orthoinfo.aaos.org/en/diseases–conditions/hamstring-muscle-injuries/

  If you strain your hamstring while sprinting in full stride, you will notice a sudden, sharp pain in the back of your thigh. It will cause you to come to a quick stop, and either hop on your good leg or fall. […] Additional symptoms may include: swelling during the first few hours after injury, bruising or discoloration of the back of your leg below the knee over the first few days, weakness in your hamstring that can persist for weeks. […] Most hamstring strains heal very well with simple, nonsurgical treatment. […] Rehabilitation for a proximal hamstring repair typically takes at least 6 months, due to the severity of the injury. […] Distal hamstring repair requires approximately 3 months of rehabilitation before returning to athletic activities. […] Most people who injure their hamstrings will recover full function after completing a rehabilitation plan. Early treatment with a plan that includes the RICE protocol and physical therapy has been shown to result in better function and quicker return to sports.

• #2 Symptoms of Hamstring Strain

  https://aidyourhamstring.com/hamstring-strain/hamstring-strain-symptoms.php

  Occasionally, bruising (hamstring contusion) and discoloration over your hamstring muscle may appear immediately or after a few days with severe hamstring strains. […] You may experience stiffness or decreased range of motion (ROM) as a result of a pulled hamstring muscle. The tightness at the back of your thigh will make it difficult to flex your knee or straighten your leg. Your gait may be affected, or you may limp when you walk if the stiffness causes discomfort. […] A sharp pain or twinges may be felt along the length of your hamstring or at a specific point on the back of your thigh. […] You may experience tenderness and/or muscle spasms in your hamstring muscle during active and resistive movements. Pain often increases when pressure is applied to the injured hamstring muscles.

• #2 Hamstring Injury: Hamstring Strain Symptoms, Causes, and Treatments

  https://www.webmd.com/fitness-exercise/hamstring-strain

  Mild hamstring strains may not hurt too much. But severe ones can be extremely painful, making it impossible to walk or even stand. […] Other possible symptoms of a hamstring strain are: Sudden and severe pain during exercise, along with a snapping or popping feeling; Pain in the back of the thigh and lower buttock when walking, straightening the leg, or bending over; Tenderness; Bruising. […] Recovery time depends on how badly you injured the hamstring. Keep in mind that people heal at different rates. Typically, recovery from a grade 1 strain the mildest injury takes just a few days. More serious injuries grades 2 and 3 could require weeks, even months, to fully heal.

• #2 Hamstring Tears: Signs and Symptoms

  https://www.sports-health.com/sports-injuries/leg-injuries/hamstring-tears-signs-and-symptoms

  Pain and discomfort when sitting. In avulsion type and proximal hamstring injuries, where the tendon breaks away from the pelvic bone, patients will commonly have sitting pain and discomfort. […] In the rare case of a distal avulsion, in which the hamstring tendon has torn away from the tibia or fibula, a patient may experience significant bruising and thickening of soft tissue that can be felt near the site of the injury, which results in an inability to walk without assistance.

• #2 Hamstring Tears: Signs and Symptoms

  https://www.sports-health.com/sports-injuries/leg-injuries/hamstring-tears-signs-and-symptoms

  Sharp pain at the back of the thigh or buttocks is a potential symptom of a hamstring tear. […] Most people who suffer an acute hamstring strain will experience some of the following: […] Sharp pain. When the injury occurs, one may feel an abrupt, sharp pain at the back of the thigh or buttocks. […] A pop sound or sensation. This sudden pain is sometimes accompanied by an audible or palpable pop and a sensation of the leg giving way. […] Difficulty moving and bearing weight. Following a hamstring injury, it may be hard or impossible to continue activity. The person may even have trouble walking with a normal gait, getting up from a seated position, or descending stairs. […] Bruising. Sometimes bruising and discoloration can be seen along the back of the thigh. […] Swelling and deformity. For cases in which there has been a complete tear of the muscle-tendon junction (myotendinous rupture), there may be bruising along with palpable defects, such as muscle lumpiness, under the skin.

• #2 Grades of Hamstring Pulls

  https://m.aidyourhamstring.com/pulled-hamstring/pulled-hamstring-progression.php

  A pulled hamstring is classified into 3 grades of hamstring strain severity: […] Grade 1 (Minor) Hamstring Strains involve slightly pulled or excessively stretched muscles, or very small tears in your muscles. You will generally feel some specific point pain, tightness or mild cramping in your hamstring which will be a little uncomfortable, but will involve no swelling or no major loss of strength. […] Grade 2 (Moderate) Hamstring Strains are more painful and involve a partial tearing of the hamstring fibers in your muscles, tendons, or at the tendon attachment to your bone. You will generally experience some pain that radiates down your leg during activity, while bending your knee against resistance, or when you touch your hamstring. Swelling, stiffness, decreased strength and range of motion (may not be able to straighten knee) will be apparent and can also cause you to limp.

• #2 Hamstring strain – aftercare: MedlinePlus Medical EncyclopediaLock

  https://medlineplus.gov/ency/patientinstructions/000551.htm

  A strain is when a muscle becomes overstretched and tears. This painful injury is also called a „pulled muscle.” […] If you have strained your hamstring, you have pulled one or more of the muscles on the back of your upper leg (thigh). […] You can expect swelling, tenderness, and pain after a hamstring strain. Walking may be painful. […] Symptoms, such as pain and soreness, may last: […] Two to five days for a grade 1 injury […] Up to a few weeks or a month for grade 2 or 3 injuries. […] If the injury is very close to the buttock or knee or there is a lot of bruising: […] It may mean the hamstring tendon was pulled off the bone. […] You will likely be referred to a sports medicine or bone (orthopedic) doctor. […] You may need surgery to reattach the hamstring tendon.

• #2 5 Common Pulled Hamstring Symptoms – What Is a Hamstring Strain? – What Causes a Hamstring Strain? – What Does a Hamstring Cramp Feel LIke?

  https://redrocktherapy.com/5-common-symptoms-of-a-hamstring-strain/

  Level one The first level is also known as grade 1 hamstring strain is mild compared to others. With this you may feel tightness in the back thigh, but it will not affect your mobility. However, your full speed will be greatly affected due to the discomfort. There may also be a little swelling in the affected leg. […] Level two At this second grade hamstring strain, you may find yourself limping and unable to walk easily. You will also feel sharp pain with every movement you make. And when you try to bend the knee, you will feel a lot of pain on the hamstring muscle. […] Level three A grade 3 hamstring strain is very serious and warrants immediate and proper attention. This may be characterized by tear in part of the muscle or all of it. It comes with severe pain, paralyzing walking ability completely. The muscle becomes weak and there is visible swelling and bruising within 24 hours.

• #2 Hamstring Injury | Symptoms and Recovery | OrthoIndy Blog

  https://blog.orthoindy.com/2020/12/15/hamstring-injury-symptoms-recovery-and-treatment/

  In severe hamstring injuries, the tendons may tear completely away from the bone and even pull bone with it, known as an avulsion injury. […] A hamstring strain grade determines the severity of your injury. Grade 1 (pull): Mild, usually heals quickly, two to four weeks. Grade 2 (partial tear): Moderate, heals over four to eight weeks. Grade 3 (complete tear): Severe, often requires acute surgery or will take months to heal.

• #2 Grades of Hamstring Pulls

  https://m.aidyourhamstring.com/pulled-hamstring/pulled-hamstring-progression.php

  Grade 3 (Severe) Hamstring Strains involve a complete tear (rupture) of your hamstring muscle fibers where your muscle belly attaches to your tendon or where your muscle belly rips in 2 separate pieces. It is very painful and rarer than the other strains. You will tend to experience a burning or stabbing pain, a lot of swelling and minimal strength, which may prevent you from walking without assistance or make it difficult for you to move your leg. […] If you continue to experience the hamstring injury symptoms and have tried the suggested conservative treatments for 2-3 weeks, it is recommended that you seek professional medical attention. […] It is recommended you seek immediate attention if you: hear a „loud pop” in your muscle when injured, have immediate severe pain, swelling or discoloration in your hamstrings, experience severe weakness in your leg (compared to other leg) and have difficulty walking, have a temperature over 100.4 F (38 C), notice blue toe nails, numbness or coldness below your injury.

• #2 Hamstring Tear & Surgery | University of Utah Health

  https://healthcare.utah.edu/orthopaedics/specialties/hip-pain/hamstring-tear-surgery

  People who experience a hamstring tear usually experience: sudden, sharp pain in the back of their thigh, a popping sensation in their leg, tenderness around their muscle, swelling on the back of their leg a few hours after the injury, pain while sitting down, bruising within a few days, and weakness or instability in the injured leg. […] Symptoms of a complete hamstring tear are more severe. People often describe it as being shot in the upper leg or buttocks, or a sudden, stabbing pain. After a complete hamstring tear, you may not be able to put any weight on your leg or straighten your leg. […] Mild hamstring tears or strains (grade 1) and partial hamstring tears (grade 2) take three to eight weeks to heal. […] Complete hamstring tears (grade 3) take three to six months to heal after surgery.

• #2 Evidence-Based Hamstring Strain Management — Oregon Running Clinic

  https://www.oregonrunningclinic.com/runners-life-blog/2022/6/8/evidence-based-hamstring-strain-management

  Hamstring strains are among the most common injuries that plague runners. […] Biceps femoris is the most common hamstring muscle to strain. […] A grade one strain will have local pain, tightness, possible cramping in the back of the thigh, and slight pain with muscle stretching or contraction. […] Grade two describes a moderate strain, where the muscle stays intact but the pain will cover a larger area than in a grade one strain. […] A grade three strain is a severe strain, with a complete tear of the muscle. […] Hamstring strains can cause loss from time competition and running generally for 3 to 28 days, depending on the severity of the injury. […] Runners with hamstring strains should meet with a doctor to understand the severity of the strain and begin steps to recover. […] The healing phase for hamstring injuries for runners includes three phases: inflammation, proliferation and remodeling.

• #2 Hamstring injury

  https://www.nhs.uk/conditions/hamstring-injury/

  Recovering from a hamstring injury may take days, weeks or months, depending on how severe it is. […] A completely torn hamstring may take several months to heal and you’ll be unable to resume training or play sport during this time. […] Returning to strenuous exercise too quickly could make your injury worse, but avoiding exercise for too long can cause your hamstring muscles to shrink and scar tissue to form around the tear. […] Many people need to avoid sports for at least a few weeks, but the length of time you need off will depend on the severity of your injury.

• #2 Hamstring Injury: Causes, Symptoms, and Treatment

  https://patient.info/bones-joints-muscles/sports-injuries/hamstring-injuries

  Mild hamstring strains may not hurt too much. But severe ones can be very painful, making it impossible to walk or even stand. […] Recovering from a hamstring injury may take from days to months, depending on how severe the strain or tear is. A grade III injury can take several months to heal; you’ll be unable to resume your usual training or play sport during this time. […] Most hamstring injuries, even grade III injuries, heal without surgery. In severe cases, crutches or splinting may be necessary. […] Lack of use, particularly if splinting, results in muscle shrinkage and the formation of scar tissue where the tear is healing. Excessive scar tissue prevents healthy muscle function, as it doesn’t stretch and move as normal muscle does. […] To avoid these complications rehabilitation exercises need to begin early (except grade III injuries): After a few days, once the pain has subsided, you should start to do regular gentle hamstring stretches followed by a programme of gentle exercise, such as walking and cycling. […] The outlook (prognosis) is generally good, but can require a period of rest by avoiding running and athletic competition, followed by adhering to a rehabilitation programme of exercises. The length required for recovery varies depending on the severity of the muscle injury.

• #2 Hamstring Injuries: Causes, Symptoms, and Treatment – The Fascia Institute

  https://fasciainstitute.org/services/hamstring-treatment/hamstring-injuries/

  Grade I (Mild Strain): Slight discomfort and stiffness in the back of the thigh, minimal swelling, tightness when bending or extending the leg. […] Grade II (Partial Tear): Moderate pain, particularly when trying to move or walk, swelling and bruising around the back of the thigh, difficulty bending or straightening the knee. […] Grade III (Complete Tear): Severe pain and a popping sensation at the time of injury, inability to bear weight or move the affected leg, visible deformity in the thigh due to muscle tearing. […] Proper diagnosis is crucial for determining the severity of a hamstring injury and developing an effective treatment plan. […] Recovery times for hamstring injuries vary depending on the severity of the injury and the type of treatment used. […] Grade I (Mild Strain): Recovery time: 1-2 weeks.

• #2 Hamstring Strain | Sports Medicine Australia

  https://sma.org.au/resources/injury-fact-sheets/hamstring-strain/

  Grade 3 (severe): Sudden, sharp pain in the back of the thigh. Walking is not possible without pain. […] Timeframes for rehabilitation and return to sport vary depending on the nature and severity of the strain. As a general rule, Grade 1 hamstring strains should be rested from sporting activity for about three weeks and Grade 2 injuries for a minimum of four to eight weeks. In the case of a complete rupture (Grade 3 strain), the muscle may have to be repaired surgically and the rehabilitation to follow will take about three months.

• #2 Recognizing and treating hamstring strains: Symptoms, recovery, and more

  https://www.exakthealth.com/en-US/blog/hamstring-strain-diagnosis-and-treatment

  Our bodies heal acute injuries, like hamstring strains, through a 3-step healing process. […] The final healing step is called the remodeling phase and can last anywhere from 4 weeks to more than 12 weeks for a more severe strain. […] The most effective treatment for hamstring strains is the right combination of rest and exercise. […] Your injured hamstring requires a period of rest to allow the injury to settle and healing to start. […] Rehab exercises help restore your injured hamstrings’ strength and flexibility. […] Ice can be helpful immediately after injury as it can help limit internal bleeding and swelling. […] Avoid heat during the first 7 days of injury. […] It is best to avoid using anti-inflammatory medication (like ibuprofen) when you have a hamstring strain. […] Avoid massage for the first 7 days of injury. […] Remember, each hamstring injury is unique, and so is the healing process. […] Whether it’s a mild pull or a more severe tear, the key to recovery lies in balancing rest and rehabilitation exercises.

• #2 Hamstring Strain Injuries: Recommendations for Diagnosis, Rehabilitation and Injury Prevention

  https://pmc.ncbi.nlm.nih.gov/articles/PMC2867336/

  Several factors have been suggested that likely contribute to the high rate of reinjury: 1) persistent weakness in the injured muscle; 2) reduced extensibility of the musculotendon unit due to residual scar tissue; and 3) adaptive changes in the biomechanics and motor patterns of sporting movements following the original injury. […] In addition to these injury-induced risk factors, modifiable risk factors that may have contributed to the original injury should be considered in the rehabilitation program. […] The addition of eccentric hamstring strength exercises as part of preseason and in-season training for elite soccer players reduced the incidence of hamstring strain injuries. […] Given the high incidence of hamstring strain injuries that occur across a variety of sports and activities and the substantial tendency for injuries to recur, the greatest impact may be achieved by developing improved techniques for preventing initial injury.

• #2 Hamstring Strain Injury: Symptoms and Treatment

  https://www.901pt.com/post/hamstring-strain-injury-symptoms-and-treatment

  Just because you are not experiencing pain does not mean that your hamstring has fully healed and is ready for any load or stress placed on it. […] One of the risk factors for getting a strain is a previous strain, so you want to make sure that your muscle rebounds from this strain and is as strong and resilient as possible to help prevent future strains.

• #2 Symptoms of Chronic High (Proximal) Hamstring Tendinopathy

  https://www.sports-health.com/sports-injuries/leg-injuries/symptoms-chronic-high-proximal-hamstring-tendinopathy

  Patients with chronic high (proximal) hamstring tendinopathies will often complain of deep posterior hip/buttock pain of gradual onset aggravated by repetitive activities, such as running or biking and often will have pain that is worsened by prolonged sitting. […] Occasionally pain may radiate down the hamstring and be felt at the back of the thigh. […] Pain while sitting or pressing on the sit bones may be a symptom of proximal hamstring tendinopathy. […] Pain when sitting. Pressing or sitting down on the ischial tuberosity (sit bone) may be uncomfortable or even painful. […] Pain with repetitive activity. Biking, hiking, running and other repetitive activities can exacerbate the posterior pain. People with high (proximal) hamstring tendinopathy will often notice a pattern to their pain. For example, the pain may appear at the same time into a workout.

• #2 Hamstring Tendonitis: Symptoms, Causes & Treatment

  https://my.clevelandclinic.org/health/diseases/22471-hamstring-tendonitis

  Hamstring tendonitis is usually the result of repetitive stress on the tendons in the back of your thigh. Overuse can make the tendon fibers irritated and inflamed. […] Symptoms of hamstring tendonitis may include: Dull aching around your buttocks, the back of your thigh, knee or lower leg (similar to the symptoms of sciatica). Leg stiffness when walking or bending your knee. Sharp pain if you suddenly overstretch your hamstring muscles or tendons. Swelling, especially right after an injury. Tingling that runs from your lower back down the back of your leg. Weakness in the back of your thigh. […] At-home treatments help most people find relief from hamstring tendon pain within a few days or weeks. Some people continue to have chronic hamstring tendonitis if theyre athletes or continue to do strenuous physical activity. After you have a tendon injury, youre more likely to injure the tendon again. Ask your healthcare provider about ways to prevent reinjury.

• #2 Hamstring Strain Injuries: Recommendations for Diagnosis, Rehabilitation and Injury Prevention

  https://pmc.ncbi.nlm.nih.gov/articles/PMC2867336/

  Hamstring strain injuries remain a challenge for both athletes and clinicians given the high incidence rate, slow healing, and persistent symptoms. […] Moreover, nearly one-third of these injuries recur within the first year following a return to sport, with subsequent injuries often being more severe than the original. […] This high reinjury rate suggests that commonly utilized rehabilitation programs may be inadequate at resolving possible muscular weakness, reduced tissue extensibility, and/or altered movement patterns associated with the injury. […] The occurrence of hamstring strain injuries during high-speed running is generally believed to occur during terminal swing phase of the gait cycle, a perception that is supported by the objective findings from 2 separate hamstring injury cases.

• #2 Hamstring Tear: Symptoms, Causes, Treatment, and More!: Elite Sports Medicine + Orthopedics: Orthopedics

  https://www.eliteorthopaedic.com/blog/hamstring-tear/

  The symptoms that you feel when you strain your hamstring will vary depending on severity of the injury. Most of the time, you with feel a sharp or sudden pain in the back of the leg. With more severe injuries, you may even feel popping, see bruising, or you may be unable to walk or bend your leg. […] A pulled hamstring often occurs when sudden twists or stops are made. This is why we commonly see athletes come in with a torn hamstring. […] A mild hamstring tear may be able to heal on its own. If you think you may have pulled your hamstring, be sure to use the RICE method. If your pain does not go away after three days, seek the help of a sports medicine specialist. […] If you pulled your hamstring and you are experiencing swelling/bruising, and it is difficult to move your leg, seek medical attention as soon as possible.

• #2 Proximal and Mid-Hamstring Strain/Tendon Tear | PM&R KnowledgeNow

  https://now.aapmr.org/proximal-and-mid-hamstring-straintendon-tear/

  Subacute/Chronic: Gradual onset of deep buttock pain, which may be vaguely localized. Can be associated with posterior thigh pain. Often worse with sitting. […] These injuries are often characterized by a significant improvement in pain, strength, and flexibility within the first week of injury, so it is important to inform individuals of this and encourage compliance with early activity restrictions to prevent delayed healing and/or recurrent injury. […] Fifty-nine percent of repeat hamstring injuries will occur within the first month of return to play (RTP). Isometric strength tends to return to level of the uninjured leg by about 20 days post-injury, while flexibility returns within about 50 days post-injury. Notably, dynamic strength deficits persist even after RTP. […] Hamstring mapping, a means of outlining the size and extent of hamstring injury, can be utilized to some degree to predict RTP. MRI can be used to grade the injury. In a study of professional athletes, RTP occurred at just over two weeks with grade 1 injuries, just over three weeks with grade 2 injuries, and over ten weeks with grade 3 injuries.

• #2 Symptoms of Chronic High (Proximal) Hamstring Tendinopathy

  https://www.sports-health.com/sports-injuries/leg-injuries/symptoms-chronic-high-proximal-hamstring-tendinopathy

  Pain with acceleration or sprinting. Runners may notice that pain appears or gets worse while accelerating or sprinting. The pain is typically worse just prior to heal strike, when the hamstring is firing to slow the body down. In some cases, severe pain may prevent athletes from sprinting. […] Pain when bending at the hip. Similar to acute hamstring strains, chronic tendinopathy may cause pain at the ischial tuberosity, or sit bone, when the hip is fully flexed. An example of this would be pain with tying shoes or bending at the waist to pick something up off the ground. […] Occasionally the sciatic nerve may become irritated or entrapped by an affected tendons scar tissue, causing sciatica-like symptoms down the leg.

• #2 Chronic Hamstring Tendinopathy Boston, MA | Thigh Pain Waltham, Dedham, MA

  https://www.suzannemillermd.com/hamstring-tendinopathy-orthopedic-specialist-waltham-dedham-ma/

  Chronic hamstring tendinopathy is a condition characterized by a deep pain in the buttocks and upper part of the back of the thigh. […] Pain is one of the most common symptoms of chronic hamstring tendinopathy and is usually felt at the back of the hip on the sit bones, where the hamstring begins. You may experience: […] Buttock pain […] Pain while bending […] Pain while sitting […] Pain during repetitive physical activity or acceleration […] Thigh pain […] Muscle stiffness. […] Chronic hamstring tendinopathy responds slowly to conservative treatment methods and healing usually takes about 3-6 months.

• #3 Hamstring Tear: Symptoms, Causes, Treatment, and More!: Elite Sports Medicine + Orthopedics: Orthopedics

  https://www.eliteorthopaedic.com/blog/hamstring-tear/

  Hamstring strains are a common condition that our orthopedic surgeons treat here at Elite Sports Medicine. Learn about different types of hamstring injuries, symptoms, treatment options, and more! […] There are three grades of hamstring injuries that vary from mild to severe: […] Grade I: This is the mildest hamstring injury. A grade I hamstring strain may feel like sudden pain in the back of the leg. Typical recovery time for this strain is a few days to a week, making sure to rest and ice the hamstring. […] Grade II: This occurs when there is a partial tear in the hamstring. A partial hamstring tear may feel like pain in the back of the thigh, popping, and inability to straighten the leg. Grade II hamstring strains may take anywhere from 1-2 months to heal. […] Grade III: This type of injury is a complete tear to the hamstring, and it is the most severe of the three grades. With a grade III tear, you will have sharp pain in the back of the leg, severe bruising, and the inability to walk. Recovery from a Grade III tear may take around 3 months to heal.

• #3 Hamstring Tear or Strain | Orthopedics | Mercy Health

  https://www.mercy.com/health-care-services/orthopedics-sports-medicine-spine/specialties/knee-leg/conditions/hamstring-tear-strain

  A hamstring tear or strain, also called a pulled hamstring, is an injury to one of the back muscles in the back of the thigh. These injuries are common with athletes who participate in sports where they must sprint. […] The immediate symptom of a hamstring tear or strain is a sudden, sharp pain in the back of the upper leg. The pain may be so severe it stops you from continuing your activity. […] Symptoms depend on the grade of the tear: Grade 1 tightness in the muscle while stretching, inability to fully move your leg from bending to straightened, and inability to bear weight on the leg affected. Grade 2 reduced muscular strength, limping when walking, and pain when bending the knee. Grade 3 a severe, sudden, sharp pain in the back of the thigh, inability to extend the knee more than 30 to 40 degrees, inability to walk without pain, and severe bruising around the impacted area. […] Mild to moderate (grade 1 or 2) tears or strains can heal within three to eight weeks with diligent home therapy. For a grade 3 hamstring tear or strain, recovery may be as long as three months.

• #3 Hamstring Strain | Sports Medicine Australia

  https://sma.org.au/resources/injury-fact-sheets/hamstring-strain/

  Grade 3 (severe): Sudden, sharp pain in the back of the thigh. Walking is not possible without pain. […] Timeframes for rehabilitation and return to sport vary depending on the nature and severity of the strain. As a general rule, Grade 1 hamstring strains should be rested from sporting activity for about three weeks and Grade 2 injuries for a minimum of four to eight weeks. In the case of a complete rupture (Grade 3 strain), the muscle may have to be repaired surgically and the rehabilitation to follow will take about three months.

• #3 Hamstring Strength and Morphology Progression after Return to Sport from Injury

  https://pmc.ncbi.nlm.nih.gov/articles/PMC3580023/

  Hamstring strain re-injury rates can reach 30% within the initial two weeks following return to sport (RTS). Incomplete recovery of strength may be a contributing factor. However, relative strength of the injured and unaffected limbs at RTS is currently unknown. The injured limb showed a peak torque deficit of 9.6% compared to the uninjured limb at RTS (60/s, p0.001), but not 6-months following. MRI revealed that 20.4% of the muscle cross-sectional area showed signs of edema at RTS with full resolution by the 6-month follow-up. Residual edema and deficits in isokinetic knee flexion strength were present at RTS, but resolved during the subsequent six months. This occurred despite MRI evidence of scar tissue formation (increased tendon volume) and muscle atrophy, suggesting that neuromuscular factors may contribute to the return of strength. Persistent strength deficits have been observed in individuals with recurrent hamstring injuries, despite returning to athletic competition. For example, in comparison to the unaffected limb, a 10% reduction in concentric peak torque was noted in subjects having experienced injury two to 12 months prior, with a 22% strength deficit during eccentric testing. The strength deficit present at the time of RTS is likely related to the remaining muscle injury observed on MRI (T2-hyperintensity). On average, 20% of the muscles cross-sectional area showed signs of injury at RTS with the MRI performed an average of 26 days post-injury (range, 1349 days). Six months following RTS, this strength deficit resolved, despite the ST and biceps femoris muscles of both limbs experiencing 45% atrophy.

• #3 Hamstring injury: treatment, recovery time and when to see a doctor – Institute of Sport, Exercise & Health

  https://iseh.co.uk/news/latest-news/hamstring-injury-treatment-recovery-time-and-when-to-see-a-doctor

  Hamstring injuries are particularly problematic as they tend to recur and once a player has had one injury, they can often get subsequent injuries which are often worse than the initial injury. […] Hamstring injuries tend to be very common and can affect many players in running, kicking and pivotal sports such as football. […] Symptoms of a hamstring injury can often be managed at home but additional help is often needed if the patient experiences any of the following: bruising / or large amounts of pain, loss of power or strength, symptoms such as pins and needles or numbness. […] If the injury does not start to recover, it is important to have the muscle checked by seeking medical help. […] Low grade hamstring injuries can heal within several days to 1-2 weeks, which will then see them return to sport/activities. Larger injuries can take between 2 and 6 weeks for players to return to sport.

• #3 Proximal and Mid-Hamstring Strain/Tendon Tear | PM&R KnowledgeNow

  https://now.aapmr.org/proximal-and-mid-hamstring-straintendon-tear/

  Subacute/Chronic: Gradual onset of deep buttock pain, which may be vaguely localized. Can be associated with posterior thigh pain. Often worse with sitting. […] These injuries are often characterized by a significant improvement in pain, strength, and flexibility within the first week of injury, so it is important to inform individuals of this and encourage compliance with early activity restrictions to prevent delayed healing and/or recurrent injury. […] Fifty-nine percent of repeat hamstring injuries will occur within the first month of return to play (RTP). Isometric strength tends to return to level of the uninjured leg by about 20 days post-injury, while flexibility returns within about 50 days post-injury. Notably, dynamic strength deficits persist even after RTP. […] Hamstring mapping, a means of outlining the size and extent of hamstring injury, can be utilized to some degree to predict RTP. MRI can be used to grade the injury. In a study of professional athletes, RTP occurred at just over two weeks with grade 1 injuries, just over three weeks with grade 2 injuries, and over ten weeks with grade 3 injuries.

• #3 Hamstring Strain Injury: Symptoms and Treatment

  https://www.901pt.com/post/hamstring-strain-injury-symptoms-and-treatment

  Just because you are not experiencing pain does not mean that your hamstring has fully healed and is ready for any load or stress placed on it. […] One of the risk factors for getting a strain is a previous strain, so you want to make sure that your muscle rebounds from this strain and is as strong and resilient as possible to help prevent future strains.

• #3 Chronic Hamstring Tendinopathy Boston, MA | Thigh Pain Waltham, Dedham, MA

  https://www.suzannemillermd.com/hamstring-tendinopathy-orthopedic-specialist-waltham-dedham-ma/

  Chronic hamstring tendinopathy is a condition characterized by a deep pain in the buttocks and upper part of the back of the thigh. […] Pain is one of the most common symptoms of chronic hamstring tendinopathy and is usually felt at the back of the hip on the sit bones, where the hamstring begins. You may experience: […] Buttock pain […] Pain while bending […] Pain while sitting […] Pain during repetitive physical activity or acceleration […] Thigh pain […] Muscle stiffness. […] Chronic hamstring tendinopathy responds slowly to conservative treatment methods and healing usually takes about 3-6 months.

• #3 Hamstring Tendonitis: Symptoms, Causes & Treatment

  https://my.clevelandclinic.org/health/diseases/22471-hamstring-tendonitis

  Hamstring tendonitis is usually the result of repetitive stress on the tendons in the back of your thigh. Overuse can make the tendon fibers irritated and inflamed. […] Symptoms of hamstring tendonitis may include: Dull aching around your buttocks, the back of your thigh, knee or lower leg (similar to the symptoms of sciatica). Leg stiffness when walking or bending your knee. Sharp pain if you suddenly overstretch your hamstring muscles or tendons. Swelling, especially right after an injury. Tingling that runs from your lower back down the back of your leg. Weakness in the back of your thigh. […] At-home treatments help most people find relief from hamstring tendon pain within a few days or weeks. Some people continue to have chronic hamstring tendonitis if theyre athletes or continue to do strenuous physical activity. After you have a tendon injury, youre more likely to injure the tendon again. Ask your healthcare provider about ways to prevent reinjury.

• #3 Recognizing and treating hamstring strains: Symptoms, recovery, and more

  https://www.exakthealth.com/en-US/blog/hamstring-strain-diagnosis-and-treatment

  Our bodies heal acute injuries, like hamstring strains, through a 3-step healing process. […] The final healing step is called the remodeling phase and can last anywhere from 4 weeks to more than 12 weeks for a more severe strain. […] The most effective treatment for hamstring strains is the right combination of rest and exercise. […] Your injured hamstring requires a period of rest to allow the injury to settle and healing to start. […] Rehab exercises help restore your injured hamstrings’ strength and flexibility. […] Ice can be helpful immediately after injury as it can help limit internal bleeding and swelling. […] Avoid heat during the first 7 days of injury. […] It is best to avoid using anti-inflammatory medication (like ibuprofen) when you have a hamstring strain. […] Avoid massage for the first 7 days of injury. […] Remember, each hamstring injury is unique, and so is the healing process. […] Whether it’s a mild pull or a more severe tear, the key to recovery lies in balancing rest and rehabilitation exercises.

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