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). Synonym(s): musculus quadratus femoris [TA], quadrate muscle of thigh