quadratus femoris (muscle)

quad·ra·tus fem·'o·ris (mus·cle)

[TA]
deep muscle of inferior gluteal (buttock) region; insertion, intertrochanteric ridge; origin, lateral border of tuberosity of ischium; action, rotates thigh laterally; nerve supply, nerve to quadratus femoris (sacral plexus).
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