Football Injuries: Prevention and Rehabilitation

Football injuries

The Most Common Pathologies in Football

1. Ankle Sprain

Ankle sprain is the most frequent acute injury in football, accounting for approximately 15-20% of all injuries. The typical mechanism is forced inversion of the foot during a change of direction, a tackle, or landing on uneven ground. The most affected ligament is the anterior talofibular ligament (ATFL). Sprains are classified into three grades of severity, from simple ligamentous stretching to complete rupture.

Prevention involves proprioceptive work and strengthening of the peroneal muscles. Those who have already suffered a sprain have a significantly higher risk of recurrence, which is why ankle stabilization work must become an integral part of athletic preparation.

2. Anterior Cruciate Ligament (ACL) Injury

ACL injury is one of the most feared injuries in football. The most common mechanism is a cutting movement with the foot planted on the ground and the knee in dynamic valgus, or landing from a jump with the knee in hyperextension. Approximately 70% of ACL injuries in football occur without direct contact with an opponent.

This injury generally requires surgical reconstruction followed by a long rehabilitation process (6-12 months). The rate of return to sport at the pre-injury level in professional footballers is around 65-80%. Prevention, based on neuromuscular exercises and control of dynamic valgus, is therefore of crucial importance.

Further reading: Knee sprain and ligament injuries

3. Hamstring Strain and Tear

Hamstring muscle injuries (biceps femoris, semimembranosus, and semitendinosus) account for approximately 12-16% of all football injuries and are the leading cause of absence from training. The typical mechanism is sprinting or the deceleration phase, when the muscle works in high-speed eccentric contraction. The biceps femoris is the most frequently involved muscle.

Key risk factors include: strength imbalance between quadriceps and hamstrings (altered H/Q ratio), poor flexibility, muscle fatigue, and previous injuries. The recurrence rate is high, between 12 and 33%, and occurs mainly in the first few weeks after returning to play.

Further reading: Muscle strain and Muscle tear

4. Pubalgia (Groin Pain)

Pubalgia is a chronic painful syndrome of the groin and pubic region, particularly frequent in football due to repeated kicking, changes of direction, and adduction movements against resistance. It affects approximately 5-10% of professional footballers each season.

Different forms are distinguished: adductor tendinopathy (the most common in football, responsible for over 60% of cases), inguinal disruption (sports hernia), and femoroacetabular impingement. Differential diagnosis is fundamental for setting the correct treatment.

Further reading: Pubalgia: causes, symptoms and treatment

5. Meniscal Tear

Meniscal injury can occur in isolation or in combination with ligamentous injuries. The typical mechanism is knee rotation with the foot blocked on the ground. Symptoms include joint pain, swelling, joint locking, and a feeling of instability. Treatment depends on the type, location, and extent of the injury: peripheral tears in the red zone (vascularized) can be surgically repaired, while tears in the white zone (avascular) often require partial meniscectomy.

6. Stress Fracture

Stress fractures in football predominantly affect the fifth metatarsal, tibia, and navicular. They are caused by the accumulation of repeated microtraumas that exceed the bone’s remodeling capacity. Risk factors include abrupt increases in training loads, hard playing surfaces (synthetic pitches), nutritional deficiencies, and overtraining syndrome. Pain is initially vague and progressive, worsening with activity.

Further reading: Tibial periostitis and shin pain

7. Patellar Tendinopathy

Also known as “jumper’s knee,” patellar tendinopathy is common in footballers due to repeated jumping, sprinting, and decelerations. Pain is localized at the inferior pole of the patella and worsens with explosive loads. Management is predominantly conservative and is based on progressive eccentric and isometric loading programs.

Further reading: Patellofemoral chondropathy and anterior knee pain

8. Contusions

Muscle and bone contusions are very common in football due to frequent physical contact. The most affected areas are the thigh (especially the quadriceps) and the lower leg. Although often considered minor injuries, severe contusions can cause significant intramuscular hematomas and, if not treated correctly, can be complicated by myositis ossificans (formation of bone tissue in the muscle).

Risk Factors for Football Injuries

Ankle sprain is the most frequent acute football injury involving forced inversion of the foot, damaging the anterior talofibular ligament, presenting with pain, swelling, and instability. Knowing the risk factors allows for targeted intervention in prevention. Intrinsic factors (related to the footballer) and extrinsic factors (related to the environment and training) are distinguished.

Intrinsic Factors

• Previous injuries: the strongest risk factor of all. A footballer who has suffered a hamstring muscle injury has a 2-6 times higher risk of recurrence compared to someone who has never had the same injury. The same applies to ankle sprains and ACL injuries.
• Muscle imbalances: an altered strength ratio between agonist and antagonist muscles (e.g., between quadriceps and hamstrings, with an H/Q ratio below 0.6) is associated with a significantly higher risk of muscle injuries.
• Flexibility deficits: reduced flexibility of the hamstrings, quadriceps, adductors, and hip flexors is correlated with an increased risk of muscle injuries and pubalgia.
• Proprioceptive and neuromuscular control deficits: insufficient control of joint stability, particularly of the knee (dynamic valgus) and ankle, increases the risk of ligamentous injuries.
• Age: older footballers (over 30) have a higher risk of muscle injuries, while younger players are more prone to growth-related injuries (apophysitis) and stress fractures.
• Fatigue: muscle fatigue, especially in the final part of matches, reduces the neuromuscular protective capacity of the joints. It is no coincidence that a high percentage of injuries occur in the last 15 minutes of each half of play.

Extrinsic Factors

• Playing surface: older generation artificial turf pitches are associated with a higher risk of injuries compared to natural grass, particularly for ankle sprains and ACL injuries. Uneven, wet, or too dry pitches represent an additional risk factor.
• Training load: abrupt increases in training volume or intensity greater than 10% weekly are associated with a significant increase in injury risk. The acute:chronic workload ratio (ACWR) is a key indicator: values above 1.5 indicate a danger zone.
• Match schedule: periods of fixture congestion (3 matches in one week) increase the risk of muscle injuries up to 6 times compared to periods with only one match per week.
• Equipment: inadequate or worn footwear, absence of shin guards, and use of studs not suitable for the playing surface contribute to the risk.
• Inadequate warm-up: an insufficient or unstructured warm-up is a primary modifiable risk factor, as demonstrated by the effectiveness of the FIFA 11+ program.

The FIFA 11+ Protocol: Evidence-Based Prevention

The FIFA 11+ is a structured warm-up program developed by the FIFA Medical Research Centre (F-MARC) in collaboration with the Oslo Sports Trauma Research Center. It is the football injury prevention program with the highest level of available scientific evidence.

What the research says

Numerous randomized controlled trials and meta-analyses have shown that FIFA 11+, performed at least 2-3 times a week as a substitute for traditional warm-up, is able to:

• Reduce the overall risk of injuries by 30-50%
• Reduce the risk of severe injuries by 30-70%
• Reduce the risk of ACL injuries by 45-50%
• Improve neuromuscular performance, strength, and balance

Program Structure

The FIFA 11+ consists of three parts to be performed in sequence, for a total duration of approximately 20 minutes:

Part 1 — Running exercises (8 minutes): slow running, running with lateral movements, running with partner changes, running with shoulder contact, running with quick jumps and agility movements.

Part 2 — Strength, plyometrics, and balance (10 minutes): the core of the program. It includes 6 exercises with 3 progressive difficulty levels:

• Prone plank (and variations)
• Side plank (and variations)
• Nordic hamstring exercise
• Single leg balance (and variations)
• Squat (and variations)
• Vertical and lateral jumps (and variations)

Part 3 — High-speed running exercises (2 minutes): sprints, changes of direction, and decelerations at match speed.

Practical Considerations

The program is effective only if performed with consistency and quality. Studies have shown that teams with adherence greater than 75% achieve significantly greater injury reductions than those with low adherence. Supervision by an athletic trainer or sports physical therapist is recommended, at least in the initial phase, to ensure correct execution of the exercises.

Preventive Exercise Program for Footballers

Below is a program of fundamental exercises for preventing injuries in football. Each exercise is described in detail, and it is advisable to perform it under the guidance of a doctor or physical therapist, especially in the initial phases, to ensure correct technical execution.

1. Nordic Hamstring Exercise (NHE)

The Nordic Hamstring Exercise is the exercise with the strongest scientific evidence in preventing hamstring muscle injuries in football. Large-scale studies have shown a reduction in injury risk of up to 51% and a reduction in recurrences of up to 85%.

Execution: start kneeling, with a partner holding the ankles. Keeping the torso aligned with the thighs (without bending at the hip), slowly lean forward as slowly as possible, braking the descent with the strength of the hamstrings. Once the maximum controllable range of motion is reached, let yourself fall and cushion with your hands, then return to the starting position by pushing with your arms.

Dosage: start with 2 sets of 3 repetitions and gradually progress to 3 sets of 10-12 repetitions over 8-10 weeks.

[IMAGE: Nordic Hamstring Exercise — Footballer kneeling on a mat, a partner holds the ankles pressed to the ground. The footballer leans forward with a rigid body, controlling the descent with the hamstrings, with arms ready to cushion the fall. Side view showing the straight alignment of the trunk and thighs.]

2. Single Leg Squat (Assisted Pistol Squat)

The single leg squat is fundamental for developing unilateral strength and controlling dynamic knee valgus, two key elements in preventing ACL injuries.

Execution: standing on one leg, with the free leg slightly raised forward. Slowly descend by bending the knee and hip, keeping the knee aligned with the second toe (avoid valgus). Descend to about 60-70 degrees of knee flexion and then rise. In the initial phases, use support (chair, wall, TRX) for balance.

Dosage: 3 sets of 8-10 repetitions per leg, 2-3 times a week.

[IMAGE: Assisted single leg squat — Footballer standing on one leg next to a wall bar used as support. The knee of the supporting leg is bent at about 60 degrees, aligned with the tip of the foot. The free leg is raised forward. Front view highlighting correct knee alignment without valgus.]

3. Plank with Dynamic Variations

The plank and its variations are essential for core stability, which is fundamental for postural control during changes of direction, tackles, and shots. Insufficient core stability is correlated with an increased risk of lower limb injuries and pubalgia.

Execution: prone plank position on the elbows, with the body aligned from shoulders to ankles. Hold the position for 30-45 seconds. Advanced variations: alternately lift one leg, lift one arm, add shoulder tap movements with the opposite hand.

Dosage: 3 sets of 30-45 seconds (static plank) or 3 sets of 8-10 repetitions per side (dynamic variations).

[IMAGE: Prone plank with alternating leg lift — Footballer in plank position on elbows, body perfectly aligned. One leg is raised about 15-20 cm from the ground, keeping the pelvis stable and without trunk rotation. Side view showing body alignment from head to toe.]

4. Single Leg Balance with Perturbations

Proprioceptive training is the basis of ankle sprain prevention and also contributes to ACL injury prevention. Adding external perturbations makes the exercise more specific for football.

Execution: standing on one leg, on an unstable surface (proprioceptive cushion, wobble board). Maintain balance while a partner applies small pushes in random directions, or while performing ball passes and receptions with the hands. Progression: eyes closed, more unstable surface.

Dosage: 3-4 sets of 30-40 seconds per leg, 3 times a week.

[IMAGE: Single leg balance with perturbations — Footballer standing on a proprioceptive cushion on one leg, knee slightly bent. A partner in front throws a ball that the footballer receives with their hands, maintaining ankle and knee stability. Front view showing postural control.]

5. Multidirectional Lunges

Lunges in different directions reproduce the functional demands of football and train knee and hip stability in the frontal and transverse planes of movement, contributing to the prevention of ACL injuries, muscle strains, and pubalgia.

Execution: from a standing position, perform a lunge forward, sideways, and backward in sequence, always keeping the knee of the advanced leg aligned with the foot and the trunk upright. Control the descent and ascent without compensation.

Dosage: 3 sets of 6-8 repetitions per direction per leg.

[IMAGE: Multidirectional lunges — Sequence of three positions: anterior lunge, lateral lunge, and posterior lunge. The footballer keeps the trunk upright and the knee of the advanced leg aligned with the tip of the foot. Front view for the lateral lunge showing the correct hip, knee, and ankle position.]

6. Copenhagen Adductor Exercise

This exercise is specific for strengthening the hip adductors and was developed precisely for the prevention of pubalgia in footballers. Studies have shown a reduction in the risk of adductor injuries of 41% in footballers who perform it regularly.

Execution: in a side plank position on the elbow, with a partner supporting the upper leg at the ankle or knee level. The lower leg is free. Lift the pelvis off the ground and bring the lower leg upwards until it touches the upper leg, using the strength of the adductors. Hold briefly and return to the starting position.

Dosage: start with the easier variant (knee support, isometric) and progress to the full version (ankle support, dynamic). 2-3 sets of 5-8 repetitions per side.

[IMAGE: Copenhagen Adductor Exercise — Footballer in a side plank position on the left elbow. A standing partner supports the upper leg (right) at ankle level. The lower leg (left) lifts off the ground towards the upper leg using the strength of the adductors. Front view showing the lifting of the lower leg and body alignment.]

7. Controlled Decelerations and Changes of Direction

The ability to decelerate and change direction in a controlled manner is fundamental to reducing the risk of ACL injuries and muscle tears. This exercise trains the correct motor pattern for braking and changing direction.

Execution: accelerate for 10-15 meters, followed by a controlled deceleration over 3-4 steps with lowering of the center of gravity (hip and knee flexion), foot landing under the center of gravity, and trunk slightly tilted backward. Subsequently, perform a 45-90 degree change of direction with a crossover step and restart. Focus on keeping the knee aligned without valgus collapse.

Dosage: 6-8 repetitions per side, with full recovery between repetitions.

[IMAGE: Deceleration and change of direction — Sequence of two moments: in the first image, the footballer decelerates from a sprint with a low center of gravity, bent knees, and feet landing under the body. In the second image, they perform a 90-degree change of direction with a crossover step, keeping the knee of the outer leg aligned without valgus. Side and front view.]

8. Eccentric Calf Raises on a Step

Eccentric strengthening of the triceps surae (gastrocnemius and soleus) is fundamental for preventing Achilles tendinopathy and calf muscle injuries, which are increasingly frequent in modern football.

Execution: standing on a step with the forefoot, heel in the air. Rise onto the balls of both feet (concentric phase), then transfer weight to one foot and slowly descend (3-4 seconds) below the level of the step (eccentric phase). Perform both with the knee extended (gastrocnemius work) and with the knee slightly bent (soleus work).

Dosage: 3 sets of 12-15 repetitions per leg, knee extended and knee flexed, every other day.

[IMAGE: Eccentric calf raise on a step — Footballer standing on the edge of a step with the forefoot. In one frame, they are on their toes (concentric phase on two feet), in the second, they are in eccentric descent on one foot with the heel dropping below the level of the step. Side view showing the full range of motion.]

Rehabilitation and Return to Play

General Principles of Rehabilitation in Football

Rehabilitation of a football injury must follow a progressive and individualized path that considers not only the biological healing of the tissue but also the complete recovery of functionality and athletic performance. Rushing the return to play drastically increases the risk of recurrence.

The rehabilitation process generally consists of four phases:

Phase 1 — Acute phase (protection and pain management): management of inflammation and pain, protection of the injured tissue, maintenance of joint range of motion and strength in uninvolved areas. The PEACE &038; LOVE protocol (Protection, Elevation, Avoid anti-inflammatory modalities, Compression, Education &038; Load, Optimism, Vascularisation, Exercise) is applied, which has replaced the traditional RICE.

Phase 2 — Subacute phase (recovery of mobility and basic strength): recovery of full joint mobility, initiation of progressive muscle strengthening (isometric, concentric, eccentric), proprioceptive work in controlled conditions.

Phase 3 — Re-athleticization phase (performance recovery): high-intensity muscle strengthening, progressive linear running, plyometric exercises, agility and change of direction exercises, sport-specific activities without contact.

Phase 4 — Return to Sport (RTS): full team training, progressive participation in contact drills, gradual return to competition.

Return to Sport (RTS) Criteria

Return to play should not be based solely on the time elapsed since the injury, but on objective and measurable criteria. The main RTS criteria used in football are:

• Absence of pain: no pain during all high-intensity sport-specific activities
• Full recovery of joint range of motion: comparison with the contralateral side
• Strength recovery: muscle strength equal to or greater than 90% of the healthy side (measured with isokinetic dynamometry or functional tests)
• Limb Symmetry Index (LSI) greater than 90%: symmetry between the two limbs in functional tests (single leg hop test, triple hop test, crossover hop test, timed hop test)
• Passing sport-specific functional tests: Y-Balance Test, agility tests (T-test, Illinois agility test), change of direction tests, repeated sprints
• Passing psychological tests: psychological readiness to return to play is assessed with validated questionnaires such as the ACL-RSI (for ACL injuries) or the I-PRRS (Injury-Psychological Readiness to Return to Sport)
• Completion of at least 2-3 full training sessions with the team without problems

A cautious and criteria-based approach is recommended by the doctor or physical therapist to minimize the risk of recurrence. It is always advisable to rely on qualified healthcare professionals for managing the rehabilitation process and for the decision on returning to competition.

Specific Aspects of Rehabilitation by Pathology

For hamstring muscle injuries, the rehabilitation program must include a progression of eccentric exercises (from low-intensity Nordic Hamstring to eccentric sprints), progressive sprints with GPS monitoring of maximum speed reached (the goal is to reach 100% of pre-injury maximum speed before returning to play) and a high-speed running protocol.

For ACL injuries, the rehabilitation pathway is generally divided into longer time phases and includes recovery of full knee extension in the first few weeks, progressive quadriceps strengthening (LSI goal greater than 90%), advanced proprioceptive work, and functional jump tests. Full return to sport does not occur before 9-12 months after surgery.

For pubalgia, rehabilitation focuses on strengthening the adductors with progressive exercises (Copenhagen exercise, isometric and isotonic adduction), core and pelvic stabilization, gradual progression of specific football technical movements (kicking, changes of direction), and correction of any muscle imbalances between hip adductors and abductors.

For ankle sprains, the rehabilitation program includes recovery of dorsiflexion mobility, strengthening of the peroneal muscles (evertors), an intensive proprioceptive protocol on unstable surfaces, and progressive return to activities with changes of direction.

Related insights: Herniated disc and lumbar problems, Low back pain and the role of the iliopsoas, Plantar fasciitis, Iliotibial band syndrome

Recovery Times for Injuries

The following table shows the average recovery times for the main pathologies in football. These are estimates based on scientific literature and epidemiological data: actual times may vary depending on the severity of the injury, age, athletic level, and quality of rehabilitation. It is essential to rely on a doctor or physical therapist for a personalized estimate.

Frequently Asked Questions (FAQ)

Frequently Asked Questions

What specific strategies are recommended for preventing Anterior Cruciate Ligament (ACL) injuries in football?

Preventing ACL injuries involves incorporating neuromuscular exercises that enhance balance, agility, and proper landing mechanics. Emphasizing control of knee valgus during dynamic movements is crucial to reduce undue stress on the ligament.

What is the role of a physical therapist in guiding the rehabilitation process for football injuries?

A physical therapist develops and supervises individualized rehabilitation programs, progressively restoring strength, flexibility, and functional movement. Their expertise ensures a safe and effective return to sport, meeting specific performance and safety benchmarks.

What key criteria are typically assessed to determine a footballer’s readiness to return to play following an injury?

Return to play decisions are based on objective criteria, including full restoration of strength, range of motion, and neuromuscular control. Successful completion of sport-specific functional tests and psychological readiness are also critical for minimizing re-injury risk.

How do intrinsic and extrinsic factors contribute to the overall risk of football injuries?

Intrinsic factors, such as an athlete’s biomechanics, muscle imbalances, and previous injury history, predispose individuals to certain injuries. Extrinsic factors, including training load, playing surface, and equipment, also significantly influence injury incidence.

Sources and Scientific References

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2. Askling CM et al. (2013). Acute hamstring injuries in Swedish elite football: a prospective randomised controlled clinical trial comparing two rehabilitation protocols. Br J Sports Med. 47:953-9. DOI | PubMed
3. Marín Fermín T et al. (2023). Acute Ankle Sprain in Elite Athletes: How to Get Them Back to the Game? Foot Ankle Clin. 28:309-320. DOI | PubMed
4. Waldén M et al. (2012). Prevention of acute knee injuries in adolescent female football players: cluster randomised controlled trial. BMJ. 344:e3042. DOI | PubMed
5. Al Attar WSA et al. (2022). Injury prevention programs that include balance training exercises reduce ankle injury rates among soccer players: a systematic review. J Physiother. 68:165-173. DOI | PubMed