Muscle Atlas

Superior Gemellus

Origin: Ischial spine
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 obturator internus or nerve to quadratus femoris or both (L4-S1)
Arterial Supply: Inferior gluteal artery

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