The best time to recover from a hamstring injury is within 3 months after surgery. Surgical stitches are required after the hamstring injury, and the stitches need to be fixed in a cast for 1 month afterwards. Because of the long immobilization time, the finger will be stiff and the tendon will be adhesion, so after 1 month, the wound and tendon will be healed basically, you need to do functional exercise, either by yourself or by the rehabilitation teacher in the hospital. At first, you can do the passive activities of the fingers, in order not to cause obvious pain, after the exercise will have a slight local swelling, you can do appropriate ice to reduce the swelling, and at the same time, the external use of active oil to play a role in relaxing the tendons and activating blood. Usually within 3 months of the injury is the best time to recover, more than 3 months after the occurrence of soft tissue adhesions is difficult to do the release. Active exercise is needed within 3 months of the surgery so that it can return to a normal state and usually does not cause sequelae.