Function. Gluteus maximus main actions are to extend and laterally rotate the hip joint. Furthermore, upper fibers can abduct the hip whereas the lower fibers can adduct. ... Superior fibers of the gluteus maximus can extend the knee through its attachment to theIliotibial tract.

What does the gluteus maximus muscle do?

The gluteus maximus works with the semitendinosus and semimembranosus muscles to extend the hip. The muscle also works in conjunction with the iliopsoas, piriformis, and obturator muscles to externally rotate the hip.

Does the gluteus medius abduct the thigh?

Actions of Gluteus Medius on the thigh (femur):

Abducts thigh at the hip. Medially Rotate thigh at the hip.