gluteus maximus

Origin: 1) ilium behind posterior gluteal line 2) posterior surface of sacrum & coccyx 3) sacrotuberous ligament Insertion: -> iliotibial band of fascia lata & gluteal ridge of femur Action: -> extends thigh, especially from flexed position, as in climbing stairs or rising from a sitting position Innervation: inferior gluteal nerve

References

Stedman's Medical Dictionary 26th ed, Williams & Wilkins, Baltimore, 1995