Occurs when one or more of your hamstring muscles gets stretched too far and start to tear. Common among athletes who do a lot of sprinting or jumping. It can be mild or severe If the tendon has pulled far enough away from its origin on the bone. Younger athletes, those who are still growing, are more at risk for this particular type of injury, because of the relatively softer bone that they have compared to the tendon. Symptoms include sudden, sharp pain in the back of the thigh. Diagnosis is made by medical history, physical examination, and imaging studies such as an MRI to assess the severity of the tear or avulsion. Treatment is mainly conservative many times this will heal with a period of rest, rehabilitation, and observation. it may require a repair in severe cases.