Muscle Groups. Four powerful muscle groups move the hip. To remember these groups, try to picture where muscles need to cross joints to move limbs such as the femur in a given direction. The flexor group lies anteriorly and flexes the thigh. The primary hip flexor is the iliop-soas, extending from above the iliac crest to the lesser trochanter. The extensor group lies posteriorly and extends the thigh. The gluteus maximus is the primary extensor of the hip. It forms a band crossing from its origin along the medial pelvis to its insertion below the trochanter.
Was this article helpful?