part of part of gluteal muscle musculature of pelvic girdle quadratus femoris http://upload.wikimedia.org/wikipedia/commons/5/55/Posterior_Hip_Muscles_1.PNG EMAPA:36241 FMA:22321 quadratus femoris muscle Wikipedia:Quadratus_femoris_muscle musculus quadratus femoris The quadratus femoris is, as its name implies, a flat, quadrilateral skeletal muscle. Located on the posterior side of the hip joint, it is a strong lateral rotator and adductor of the thigh, but also acts to stabilize the femoral head in the Acetabulum. UBERON:0008537 SCTID:245020003