Muscle Atlas

Inferior Gemellus

Origin: Posterior portions of ischial tuberosity and lateral obturator ring
Insertion: Medial surface of greater trochanter of femur, in common with obturator internus
Action: Rotates the thigh laterally; also helps abduct the flexed thigh
Innervation: Nerve to the quadratus femoris or nerve to the obturator internus or both (L4-S1).
Arterial Supply: Inferior gluteal artery


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