When is PRP injection recommended for hamstring strain?

PRP uses a prepared portion of your own blood, injected into a selected area of injured tissue. A clinician first confirms the injury, its location, and its severity, because a large tear, tendon attachment injury, or another diagnosis may need a different approach. Evidence and suitability can vary between injuries, so PRP should be discussed as an adjunct to load management and progressive strength work, not as a replacement for them.

Have the hamstring examined if pain, bruising, weakness, or difficulty walking follows a sudden sprint, stretch, or fall. Ask what rehabilitation has been tried and whether it was progressed at the right pace. Discuss medicines, bleeding problems, infection risk, and the expected activity restrictions around an injection. Continue only the mobility and strengthening work your clinician considers appropriate; returning to fast running too soon can reproduce the injury.

Seek prompt care for severe pain, inability to walk, rapidly increasing swelling or bruising, a visible gap in the muscle, new numbness, or calf swelling and breathlessness. These signs need assessment and should not be managed by arranging an injection alone.

Ask whether the injury involves muscle or tendon, what goal the injection would serve, which rehabilitation steps remain essential, and when running or sport can be tested safely.