Anatomy, Bony Pelvis and Lower Limb, Gluteus Medius Muscle

The three muscles that form the gluteal region are gluteus medius, gluteus maximus, and gluteus minimus. The gluteus medius is a muscle lying between the gluteus maximus and gluteus minimus. Its posterior third is covered by gluteus maximus while the anterior two-third is superficial, covered only by a strong layer of deep fascia. Gluteus medius lies on top of the gluteus minimus, covering the minimus muscle. It is a broad muscle covering the exterior surface of ilium between the anterior and posterior gluteal lines. The posterior fibers of gluteus medius converge to form a flat tendon slanting downward and forward towards the superoposterior facet of the greater trochanter of the femur. The anterolateral part runs posteriorly toward the lateral facet of the greater trochanter of the femur. Both the parts insert into the lateral surface of the greater trochanter of femur via fibrocartilage.