- See:
external rotators of the hip:
Origin: the outer surface of the spine of the ischium
Insertion: the posterior medial surface of the greater trochanter on the femur;
Action: external rotation of the femur at the hip;
Nerve Supply: sacral plexus,
L5,
S1,
S2; (see
innervation)
Synergists: piriformis, obturator externus,
obturator internus,
quadratus femoris, gemeluus inferior;
