Hamstring Strain Physiotherapy: The Right Rehab to Avoid Re-Injury

Hamstring strains are the most common muscle injury in AFL and one of the leading causes of lost playing time across all running and field sports. They are also notoriously prone to re-injury — with recurrence rates as high as 30% when athletes return to sport prematurely. Evidence-based physiotherapy rehabilitation dramatically reduces this risk.

Understanding Hamstring Strains

The hamstrings are a group of three muscles (biceps femoris, semimembranosus, semitendinosus) running down the back of the thigh. Strains typically occur during high-speed running when the hamstring reaches maximum length during the late swing phase — just before the foot contacts the ground. This eccentric loading demand is highest at top speed.

Strains are graded by severity:

• Grade 1 (mild): micro-tears affecting less than 10% of fibres. Tightness and mild pain, full or near-full strength. Return to sport: 1–3 weeks.
• Grade 2 (moderate): partial tear, significant pain, weakness, possible bruising. Return to sport: 4–8 weeks.
• Grade 3 (severe): complete or near-complete rupture. Significant weakness, extensive bruising, may require surgery. Return to sport: 3–6 months.

The Most Common Mistake: Returning Too Soon

The single biggest predictor of hamstring re-injury is returning to sport before the muscle has regained full strength and neuromuscular control. Pain resolution is a poor guide to readiness — the muscle may feel fine at low speeds but cannot tolerate maximal sprint loads. Objective testing is essential before return to play.

Physiotherapy Rehabilitation

• Phase 1 (Days 1–5): Acute management. PEACE & LOVE protocol, gentle range of motion, pain-free isometric exercises, crutches if needed.
• Phase 2 (Days 5–21): Progressive loading. Eccentric hamstring exercises (Romanian deadlifts, Nordic hamstring curls), progressive running program starting with walking and jogging.
• Phase 3 (Week 3–6+): Strength and speed. High-load strength training, progressive sprint drills, agility work, sport-specific training.
• Return-to-sport testing: Hamstring strength symmetry testing (90%+ compared to uninjured side), passing Nordic hamstring curl test, sport-specific speed and agility completion without pain or apprehension.

Prevention

The Nordic hamstring curl is the most evidence-supported hamstring injury prevention exercise. Teams that implement the Nordic program consistently show 50–70% reductions in hamstring strain rates. If you have a history of hamstring injuries, speak to your physiotherapist about a prevention program.