Endoscopic repair of a chronic incomplete proximal hamstring avulsion in a cheerleader.

: Injuries to the hamstring muscle are common among athletes, especially strains at the myotendinal junction that respond well to nonoperative treatment. Proximal hamstring avulsion injuries can be severely debilitating, and the role of endoscopic treatment for these injuries has not been explored. This article describes the case report of a 16-year-old girl who was diagnosed with incomplete proximal hamstring avulsion showing no improvement despite extensive nonoperative treatment. The patient was treated by endoscopic repair in the prone position using a novel technique. Her preoperative pain on the ischial tubercle and while sitting disappeared completely 3 months postoperatively.