Hamstring Injury Rehabilitation: Exercises, Recovery and Return to Sport

By Dr Kunjal Shah Gada | Sports Physiotherapist | Physiocure – The Sports Rehab Clinic, Santacruz, Mumbai

Hamstring injuries are among the common muscle injuries affecting athletes involved in football, cricket, athletics, badminton, running and other sports that require sprinting, acceleration, jumping or rapid changes in movement.

A sudden pull at the back of the thigh while sprinting, pain during a powerful kick or discomfort after an intense training session may indicate a hamstring strain.

While some hamstring injuries are relatively mild, others can significantly affect an athlete’s ability to train and compete. More importantly, returning to sport before adequate rehabilitation can increase the likelihood of another injury.

Hamstring rehabilitation is not simply about reducing pain or stretching the back of the thigh. It involves restoring muscle strength, improving load tolerance, progressively reintroducing running and preparing the athlete for the physical demands of their sport.

In this article, we explore the anatomy, causes, symptoms and different stages of hamstring injury rehabilitation, including exercises and return-to-sport considerations.

1. What are the hamstring muscles?

“The hamstrings perform several important functions. For example, they help bend the knee and extend the hip. Additionally, they control lower-limb movement during running. As a result, they play an important role in acceleration and deceleration.”

The hamstring muscle group consists of:

• Biceps femoris: Has a long head and a short head. The long head originates from the pelvis, while the short head originates from the thigh bone.
• Semitendinosus: Located towards the inner portion of the posterior thigh.
• Semimembranosus: A deeper muscle located towards the inner back of the thigh.

The long head of biceps femoris, semitendinosus and semimembranosus cross both the hip and knee joints. The short head of biceps femoris crosses only the knee.

What do the hamstrings do?

The hamstrings perform several important functions:

• Bend the knee (knee flexion).
• Assist in extending the hip.
• Control the forward movement of the lower leg during running.
• Help regulate hip and knee movement during acceleration and deceleration.
• Absorb and transfer forces during sprinting, jumping and kicking.

During high-speed running, the hamstrings work eccentrically to control the forward swing of the leg before foot contact. At this stage, the muscles must tolerate considerable forces. Consequently, inadequate strength or load tolerance may increase the risk of injury.

This combination of speed, force and coordination makes them particularly vulnerable during high-intensity sporting activities.

2. How does a hamstring injury occur?

Hamstring strains commonly occur through two broad injury mechanisms.

A. High-speed running injuries

These injuries are frequently seen in sprinters, footballers and athletes who perform repeated acceleration and high-speed running.

During the late swing phase of sprinting, the hamstrings are actively lengthening while controlling the forward movement of the lower leg.

If the muscle-tendon unit cannot tolerate the forces being applied, an injury may occur.

Athletes often describe:

• A sudden pulling or tearing sensation at the back of the thigh.
• Sharp pain while accelerating.
• Difficulty continuing to run.
• Immediate reduction in sprinting ability.

B. Stretch-type hamstring injuries

These injuries occur when the hamstrings are exposed to excessive lengthening forces.

They may occur during:

• High kicks.
• Gymnastics and dancing.
• Splits or extreme stretching movements.
• Sudden forward bending with the knee extended.

Depending on the mechanism, the injury may involve the muscle tissue, musculotendinous junction or proximal hamstring tendon.

The mechanism and location of injury are important because different injury patterns may require different rehabilitation strategies and recovery timelines.

3. What are the common symptoms of a hamstring strain?

Symptoms vary depending on the severity and location of the injury.

Common signs include:

1. Pain at the back of the thigh, sometimes extending towards the buttock or knee.
2. Sudden pulling or tearing sensation during activity.
3. Tenderness when pressing the injured area.
4. Pain while bending the knee or extending the hip against resistance.
5. Difficulty walking, jogging or climbing stairs.
6. Reduced strength during knee flexion or hip extension.
7. Swelling or bruising, which may become more noticeable over the following days.

In more significant injuries, athletes may experience difficulty bearing weight or walking normally.

A sudden injury accompanied by a popping sensation, extensive bruising, marked weakness or inability to walk requires prompt medical assessment to rule out a significant muscle tear or tendon avulsion.

Not every case of posterior thigh pain is a hamstring strain. Pain originating from the lower back, hip, sciatic nerve or other structures may produce similar symptoms. A proper clinical assessment is therefore important.

4. What are the different grades of hamstring injuries?

Hamstring strains are commonly classified into three broad grades.

Grade 1 – Mild strain

• Minor damage to muscle fibres.
• Mild pain or discomfort at the back of the thigh.
• Usually minimal loss of strength.
• Walking may remain relatively comfortable.
• Pain may become more noticeable during faster running or sprinting.

Grade 2 – Moderate strain

• Partial disruption of muscle fibres.
• More noticeable pain and tenderness.
• Reduced muscle strength.
• Difficulty walking or continuing sporting activity.
• Swelling and bruising may develop.

Grade 3 – Severe strain or complete tear

• Extensive disruption or complete rupture of muscle or tendon tissue.
• Significant pain and loss of function.
• Considerable weakness.
• Possible extensive bruising and swelling.
• Difficulty bearing weight or walking.

Complete proximal hamstring tendon avulsions, where the tendon pulls away from its attachment at the pelvis, require specialist orthopaedic assessment. Some cases may require surgical repair.

The grade alone does not determine recovery time. The location of the injury, tendon involvement, previous injury history and sporting demands also matter.

5. What happens during a hamstring injury assessment?

Before prescribing hamstring exercises, it is important to understand the nature of the injury and the athlete’s functional limitations.

At Physiocure, the assessment approach considers the following:

A. Injury history

We evaluate:

• How and when the injury occurred.
• Whether it happened during sprinting, kicking, stretching or training.
• Whether the athlete experienced an immediate pulling sensation.
• Previous hamstring or lower-limb injuries.
• Current training frequency and sporting requirements.

B. Clinical examination

Depending on the stage of injury, the assessment may include:

• Palpation to identify the location and extent of tenderness.
• Hip and knee range-of-motion assessment.
• Hamstring strength testing.
• Isometric and resisted muscle testing.
• Assessment of pain during functional movements.

C. Movement assessment

The athlete’s lower-limb movement and functional capacity are evaluated according to their symptoms and rehabilitation stage.

This may include:

• Walking and single-leg balance.
• Squatting and hip-hinge movements.
• Single-leg bridging.
• Running mechanics.
• Acceleration and deceleration.
• Sport-specific movements.

D. Is imaging required?

Not every hamstring strain requires an MRI or ultrasound.

Imaging may be considered when there is suspicion of a significant tear, tendon avulsion, unusual injury presentation or failure to improve with appropriate rehabilitation.

Clinical findings, rather than imaging alone, should guide rehabilitation and return-to-sport decisions.

6. Hamstring injury rehabilitation: A phased approach

Hamstring rehabilitation should be progressive and individualised.

The objective is not simply to make the pain disappear. The athlete needs to regain the capacity to tolerate the forces involved in running, sprinting and their specific sporting activities.

A useful rehabilitation framework consists of four broad phases.

Phase 1: Early rehabilitation and symptom management

Goal: Restore comfortable movement and introduce appropriate muscle loading.

Immediately following an injury, the priority is to protect the injured tissue from excessive loading while avoiding unnecessary prolonged immobilisation.

Depending on the severity of the injury, rehabilitation may include:

• Comfortable hip and knee movements.
• Gentle isometric hamstring contractions.
• Pain-tolerated walking.
• Appropriate modification of sporting activities.
• Progressive restoration of normal movement.

Aggressive stretching, deep massage and forceful strengthening should be avoided in the early stages if they aggravate the injury.

The objective is to introduce controlled movement and muscle activation without unnecessarily increasing symptoms.

Phase 2: Progressive strengthening

Goal: Restore hamstring strength and the ability to tolerate increasing loads.

Once the athlete can tolerate early loading, strengthening becomes a major component of rehabilitation. Initially, exercises should focus on controlled muscle activation. Subsequently, resistance and movement complexity can be increased. Furthermore, eccentric strengthening should be introduced progressively.

Exercise selection should gradually challenge the hamstrings at different muscle lengths and through different contraction types.

Exercises may include:

1. Isometric hamstring contractions

The athlete applies force through the heel without producing significant joint movement.

These exercises help introduce controlled hamstring loading.

2. Glute bridges and bridge progressions

Bridge variations help develop hip extension strength while progressively challenging the posterior chain.

3. Hamstring curls

Controlled knee-flexion exercises help restore the hamstrings’ ability to generate force.

Resistance and range of motion can be increased according to tolerance.

4. Romanian deadlifts

These exercises progressively load the hamstrings during hip flexion and hip extension.

They can be introduced with appropriate resistance once the athlete demonstrates adequate movement control.

5. Eccentric hamstring exercises

Eccentric loading is an important component of hamstring rehabilitation.

Exercises such as the Nordic hamstring curl can be introduced progressively, depending on the injury and the athlete’s current capacity.

The objective is to develop strength across different muscle lengths and improve the ability to tolerate higher forces.

Phase 3: Running and acceleration progression

Goal: Prepare the hamstrings for the demands of running and higher-speed movement.

Regaining strength in the gym is an important milestone. However, it does not automatically mean that an athlete is ready to sprint. Therefore, running speed and intensity should be increased progressively before returning to unrestricted sports participation.

Running introduces different loading demands, particularly as speed increases.

A progressive running programme may include:

• Brisk walking.
• Walk-jog intervals.
• Continuous jogging.
• Controlled running at moderate speeds.
• Progressive acceleration.
• Faster running and sprint exposure.

The progression should be guided by symptoms during activity and the response over the following 24 hours.

Running speed, distance, repetitions and recovery periods should be adjusted according to the athlete’s capacity.

There is no universal rule that every hamstring injury should begin running 48 hours after the injury. The timing depends on the injury severity, clinical findings and tolerance to loading.

Phase 4: Agility, power and sport-specific rehabilitation

Goal: Restore the ability to perform high-intensity sporting movements.

For athletes, successful rehabilitation means being able to return to the movements their sport demands.

This phase may include:

• Acceleration and deceleration drills.
• Sprinting at progressively higher speeds.
• Single-leg hopping and bounding.
• Plyometric exercises.
• Change-of-direction drills.
• Sport-specific running and movement patterns.

For example:

Cricket: Short accelerations, repeated running between wickets, sudden changes in direction and fast bowling-related physical demands.

Football: Sprinting, acceleration, deceleration, kicking and repeated directional changes.

Badminton: Rapid lunges, court coverage, sudden acceleration and recovery movements.

Running and athletics: Progressive speed exposure, running volume and sprint-specific drills.

The athlete should demonstrate adequate strength, movement control and tolerance to sport-specific training before returning to unrestricted competition.

7. Why is eccentric hamstring strengthening important?

Eccentric strengthening refers to the ability of a muscle to generate force while lengthening.

This is particularly important for the hamstrings because they experience substantial eccentric demands during high-speed running.

One commonly used exercise is the Nordic hamstring curl.

Other useful exercises may include:

• Romanian deadlifts.
• Slider hamstring curls.
• Single-leg deadlifts.
• Eccentric hamstring bridges.
• Assisted Nordic curls.

However, Nordic curls are not a compulsory exercise for every injured athlete.

Exercise selection should consider the injury location, severity, rehabilitation stage and individual strength capacity.

The aim is to progressively improve hamstring strength and the ability to tolerate high-speed and high-force activities.

8. Why do hamstring injuries keep recurring?

A previous hamstring injury is an important risk factor for another hamstring injury.

Athletes may return to sport once their pain has reduced, but pain relief does not necessarily mean that muscle strength, running capacity and functional performance have been restored.

Some contributing factors include:

• Residual hamstring strength deficits.
• Inadequate eccentric strength.
• Insufficient exposure to high-speed running.
• Premature return to unrestricted training.
• Inadequate recovery between demanding training sessions.
• Previous injury and incomplete rehabilitation.
• Sudden increases in training intensity or volume.

A well-planned rehabilitation programme should therefore address more than the injured muscle alone.

The athlete’s training load, running exposure, movement demands and overall physical conditioning should also be considered.

9. When can you return to sports after a hamstring injury?

One of the most common questions athletes ask is:

“How long will it take before I can play again?”

There is no single recovery timeline that applies to every hamstring injury.

A mild muscle strain may recover much faster than a significant tendon injury. Previous hamstring injuries, injury location, age, strength deficits and sporting demands can also influence recovery.

Instead of relying only on the number of days since injury, return-to-sport decisions should be based on functional criteria.

These may include:

1. Comfortable walking and daily activities.
2. Minimal or no pain during appropriate resisted hamstring testing.
3. Adequate hamstring strength across relevant ranges of motion.
4. Tolerance to progressive running and near-maximal sprinting.
5. Ability to accelerate and decelerate without symptoms.
6. Successful completion of agility and sport-specific drills.
7. Completion of full training sessions without significant symptom recurrence.
8. Confidence in performing the movements required by the sport.

Strength symmetry between the injured and uninjured limbs can provide useful information, but it should not be the only clearance criterion.

A successful return to sport requires the athlete to demonstrate that the injured hamstring can tolerate the actual demands of their sport.

10. How can you prevent future hamstring injuries?

Hamstring injury prevention should be part of an athlete’s regular conditioning programme, not something introduced only after an injury.

A prevention programme may include:

1. Progressive hamstring strengthening

Include both knee-flexion and hip-extension strengthening exercises.

2. Eccentric training

Nordic hamstring curls and other eccentric exercises can help improve hamstring strength and reduce injury risk, particularly in football-based prevention programmes.

3. Running and sprint exposure

Athletes should maintain appropriate exposure to higher-speed running rather than performing only low-intensity conditioning.

4. Sport-specific conditioning

Training should prepare the athlete for the acceleration, deceleration, kicking, jumping and directional changes required by their sport.

5. Training-load management

Sudden increases in training volume or intensity should be avoided where possible.

6. Adequate recovery

Recovery between demanding training sessions is important for maintaining physical performance and training quality.

For footballers, structured programmes such as FIFA 11+ can be incorporated into regular warm-up routines.

Prevention programmes should be adapted to the athlete’s sport, training history and individual risk profile.

11. How can sports physiotherapy help with hamstring rehabilitation?

Hamstring rehabilitation requires more than a standard list of strengthening exercises.

Two athletes with hamstring injuries may have completely different rehabilitation requirements depending on the injury location, severity, previous injury history and sport.

At Physiocure – The Sports Rehab Clinic, Santacruz West, Mumbai, our approach to sports rehabilitation focuses on restoring movement, strength and functional capacity.

A hamstring rehabilitation programme may include:

• Detailed assessment of the injury and functional limitations.
• Individualised strengthening exercises.
• Progressive eccentric muscle loading.
• Hip and lower-limb strength development.
• Running mechanics and speed progression.
• Agility, balance and sport-specific exercises.
• Functional assessment before return to sport.
• Injury-prevention and conditioning strategies.

Whether you are a cricketer, footballer, badminton player, runner or recreational athlete, rehabilitation should be designed around the physical demands of your activity.

Don’t stop at pain relief. Work towards getting back to your sport.

Looking for Hamstring Injury Rehabilitation in Mumbai?

If you are experiencing pain at the back of your thigh, have sustained a hamstring strain or are struggling to return to sport following an injury, a sports physiotherapy assessment can help determine the next steps.

Visit Physiocure: The Sports Rehab Clinic, Santacruz West, for an assessment and an individually planned sports rehabilitation programme.

Clinic address:
F16, Bussa Apartments, V.M. Bhargav Road, Santacruz West, Mumbai – 400054.

Website: https://physiocure.in/
Instagram: @physiocure_sportsrehabclinic

Book a sports physiotherapy consultation and take the next step towards returning to your sport.

Frequently Asked Questions About Hamstring Injuries

1. How long does a hamstring injury take to heal?

Recovery depends on the severity and location of the injury, whether the tendon is involved, previous injury history and sporting requirements. Mild strains may recover in a relatively short period, whereas more significant muscle and tendon injuries can require several months of rehabilitation.

2. Can I walk with a hamstring strain?

Some athletes can walk relatively normally with a mild strain. More significant injuries may cause pain, weakness and difficulty bearing weight. Being able to walk does not necessarily mean that you are ready to run or play sports.

3. Should I stretch a pulled hamstring?

Aggressive stretching immediately after an injury may aggravate symptoms. Hamstring mobility should be restored progressively, alongside appropriate strengthening and movement exercises.

4. When can I start running after a hamstring injury?

Running should be reintroduced according to clinical assessment, strength, walking ability and symptom response. There is no fixed day that is appropriate for every athlete.

5. Are Nordic hamstring curls good for rehabilitation?

Nordic hamstring curls are useful for developing eccentric hamstring strength. They can be introduced progressively during rehabilitation, depending on the athlete’s injury, strength and tolerance.

6. Why does my hamstring injury keep coming back?

Recurrent injuries may be associated with residual strength deficits, incomplete rehabilitation, insufficient high-speed running exposure or returning to sport before the hamstring is adequately prepared for sporting demands.

7. Can a sports physiotherapist help with a hamstring tear?

Yes. Sports physiotherapy plays an important role in the rehabilitation of many hamstring muscle tears. Severe injuries, particularly suspected tendon avulsions, may first require specialist orthopaedic assessment.

About the Author

Dr Kunjal Shah Gada is a sports physiotherapist and clinic owner at Physiocure – The Sports Rehab Clinic, Santacruz, Mumbai. With 18 years of experience in physiotherapy, her clinical work focuses on sports injury rehabilitation, movement assessment, strengthening and helping athletes return to their sporting activities.

This article is intended for general educational purposes and does not replace an individual clinical assessment or medical advice.