deep lateral rotators

origin of piriformis

anterior surface of sacrum

sacrotuberous ligament

insertion of piriformis

superior border of the greater trochanter

action of piriformis

laterally rotate an extended hip

abduct a flexed hip

steady the femoral head in acetabulum

innervation of piriformis

nerve to piriformis - ventral rami S1,S2

origin of superior gemellus

ischial spine

insertion of superior gemellus

medial surface of the greater trochanter of the femur

action of the superior gemellus

laterally rotate an extended hip

abduct a flexed hip

steady femoral head in acetabulum

innervation of superior gemellus

nerve to obturator internis L5,S1,S2

origin of obturator internis

pelvic sufeace of the obturator membrane and the surrounding bone

insertion of obturator internis

medial surface of the greater trochanter of the femur

action of obturator internis

laterally rotate an extended hip

abduct a flexed hip

steady femoral head in acetabulum

innervation of obturator internis

nerve to obturator internis L5,S1,S2

origin of superior gemellus

ischial tuberosity

insertion of inferior gemellus

medial surface of the greater trochanter of the femur

action of inferior gemellus

laterally rotate an extended hip

abduct a flexed hip

steady femoral head in acetabulum

innervation of inferior gemellus

nerve to quadratus femoris L5,S1

origin of quadratus femoris

lateral border of the ischial tuberosuty

insertion of quadratus femoris

quadrate tubercle on the intertrochanteric crest and portion just inferior to it

action of quadratus femoris

laterally rotate the thigh

steady the head of the femur in acetabulum