Understand the muscles at the back of the thigh and why strength, running exposure and a gradual return all matter.
What is it?
A hamstring strain affects muscles or tendons at the back of the thigh, often during sprinting or a forceful stretch. Severity varies from a small injury to a substantial tear. Pain high near the sitting bone may need particular attention.
- Sudden back-of-thigh pain
- Tenderness or bruising
- Pain during running or bending
Assessment and other causes
A previous strain increases the risk of another injury. Assessment considers the mechanism, location, strength and functional demands. Back-related nerve pain and proximal tendon problems can resemble a muscle strain. A major tear or suspected avulsion may require imaging and specialist review; one painful stretch cannot determine the injury grade. Assessment guidance
How physiotherapy may help
Assess the injury
Check its location, walking, strength and possible tendon involvement.
Restore strength
Build progressive strength, including controlled lengthening under load, plus appropriate trunk or hip control.
Return to speed
Introduce running and faster efforts gradually, with functional reassessment before full sport.
Everyday approach
Do not use the absence of pain during a short walk as the only return-to-sport test. Your rehabilitation should prepare you for the actual speed, fatigue and movements your sport or work demands.
What to keep in mind
No programme removes all re-injury risk. A previous strain makes careful progression especially important. Passive treatment or stretching alone does not replace a structured strengthening and running plan.
General educational information, not a diagnosis or personal treatment plan. For an emergency in Australia, call 000.
Sources and further reading
Selected guidance and research; this brief guide is not an exhaustive evidence review.