Gluteus Maximus is the largest and most superficial of the three gluteal muscles which forms the rounded shape of the buttocks.
Origin - Posterior crest of the ilium.
Posterior surface of the sacrum.
Insertion - Gluteal tuberosity of the femur Iliotibial band (ITB).
Actions - Hip extension.
External rotation of the hip.
Innervation - Inferior gluteal nerve.
Daily uses - Extension phase of walking upstairs.
Example strengthening exercises - Hip extension using a resistance band.
Example stretches - Gluteus maximus stretch.
Related injuries - Myofascial pain in the buttock muscles.
Related muscles - Gluteus medius.