gluteus maximus

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gluteus maximus

(măk′sə-məs)
n. pl. glutei maximi (măk′sə-mī′)
The largest and outermost of the gluteal muscles.

gluteus maximus

The largest of the three flat buttock or rump muscles. The gluteal muscles arise from the back of the pelvis and are inserted into the back of the upper part of the thigh bone (femur). They straighten (extend) the hip joint in rising from a stooping position and in running, climbing and going upstairs.

gluteus maximus

fan-shaped muscle of gluteal (buttock) region
  • origin external surface of ilium, back of sacrum and coccyx, and sacrotuberous ligament

  • insertion gluteal tuberosity of femur and iliotibial tract, via a narrow aponeurosis

  • nerve supply inferior gluteal nerve

  • action hip joint extension (e.g. at end of toe off, when climbing stairs or lifting heavy weights); knee joint extension (via insertion into iliotibial tract); stabilization of pelvis and thigh (acting reciprocally with tensor fascia lata)