APPLIED RADIOLOGICAL ANATOMY

Detailed explanation-1: -Introduction. The primary hip extensors are the gluteus maximus and the hamstrings (i.e., the long head of the biceps femoris, the semitendinosus, and the semimembranosus).

Detailed explanation-2: -The semimembranosus muscle extends (straightens) the hip joint. It also flexes (bends) the knee joint. It also helps to medially rotate the knee: the tibia medially rotates on the femur when the knee is flexed. It medially rotates the femur when the hip is extended.