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 and superior gemellus -- a branch of the sacral plexus (L5, S1) (L5, S1)
Arterial Supply Inferior gluteal artery


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