Review Question - QID 878

Flexion of the hip and extension of the knee most likely would injure the hamstring. The hamstring is composed of the semimembranosus, semitendinosus, and biceps femoris and all three components originate at the ischial tuberosity. The article by Orava reviewed 8 patients with proximal hamstring rupture and reported that there is an eccentric component to the injury with forceful contraction of the hamstring with simultaneous lengthening of the muscle with hip flexion and knee extension. The level 4 study by Klingele reviewed 11 patients treated operatively for proximal hamstring rupture and found 91% return of muscle strength postoperatively.