Description: This set of three gluteal m. comprise the muscle mass of the buttocks. They are layered(presented as a composite in the 3D image), the larger maximus overlying the lower part of the medius, the minimus, and the ischial tuberosities. The glut.max.m. originates along the ilium, sacrum and sacrotuberous lig., and inserts posterolaterally on the gluteal tuberosity and iliotibial tract of the femur.  The glut.med.m. and the minimus originate from the gluteal surface of the ilium. Each inserts on the greater trochanter, and the minimus also inserts on the hip joint capsule. Innervation for the maximus is via the inf. gluteal n. from L5-S2, and for the medius and minimus, via the sup. glut.n., from L4-S1.  Circulation is from the superior and inf. gluteal a.