The fastest recovery time for a patient with a hamstring injury is about 2 weeks. After a hamstring injury, the soft tissue edema peaks at 72 hours, which means that the bruising and swelling is most obvious on the third day, and then it starts to gradually subside and absorb, and the blood flow to the injured hamstring area will gradually recover. It takes about 10 days for the bruising and swelling to completely subside and for the pain to disappear, so the fastest recovery time for a patient with a tendon injury is 2 weeks, or 14 days. Therefore, it is important to avoid excessive flexion, extension and weight-bearing activities in the injured tendon area within 2 weeks to avoid affecting the recovery of the injured tendon.