The muscles that bring the thighs together during adduction (movements toward the inner line of the body) belong to the adductor group. Within this group are the adductor brevis, adductor longus, adductor magnus, pectineus, gracilis, and the obturator externus. These muscles originate at the pubis and stretch to the inner areas of the thighs. The lateral rotator group consists of six muscles that can laterally rotate the femur in the hip joint. These muscles are the gemellus superior, gemellus inferior, piriformis, obturator internus, obturator externus, and quadratus femoris. All of these muscles begin at the hip bone and connect to the upper femur.
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