Quadratus Femoris: The quadratus femoris is a flat, square-shaped muscle. Located on the posterior side of the hip joint. It is the most inferior of the deep gluteal muscles, located below the Gemelli and obturator internus.It is a strong external rotator and adductor of the hip joint but also acts to stabilize the femoral head in the Acetabulum.
Origin: It originates from the lateral side of the ischial tuberosity.
Insertion: Attaches to the quadrate tuberosity on the intertrochanteric crest.
Function: Lateral rotation of the hip and assists with adduction of the hip.
Nerve Supply: Nerve to quadratus femoris.
