Hip Rotator Editor · Aug 6, 2017 · « Back Next » License Image This group of outer hip muscles includes the piriformis, superior gemellus, inferior gemellus, obturator internus and obturator externus. With their insertions on or near the greater trochanter of the femur, these muscles rotate the thigh laterally. See Also:Obturator InternusPiriformisPelvic Floor Muscles