Lateral Rotators

Question 1

Piriformis origin, insertion & actions

Answer 1

It’s origin is the anterior surface of the sacrum

It’s insertion is the superior aspect of the greater trochanter

It’s actions is to laterally rotate the hip & abduct the flexed hip

Question 2

Origin, insertion & actions for Quadratus Femoris

Answer 2

It’s origin is the lateral border of ischial tuberosity

It’s insertion is the intertrochanteric crest between the greater & lesser trochanters

It’s action is to laterally rotate the hip