Outer ilium, posterior side of sacrum and coccyx and part of the sacrotuberous and posterior sacroiliac ligament
Gluteal tuberosity of the femur and iliotibial tract
Concentric Action: Accelerates hip extension and external rotation
Eccentric Action: Decelerates hip flexion, internal rotation, and tibial internal rotation via the iliotibial band
Isometric Action: Stabilizes the lumbo–pelvic–hip complex
