Hip Muscles: Origin, Insertion, and Action

Question 1

Psoas Major

Answer 1

Origin: transverse processes of L1-L5
Insertion: lesser trochanter
Action: flexes and external rotation of hip; torso flection

Question 2

Illiacus

Answer 2

Origin:iliac fossa
Insertion: lesser trochanter
Action: flexes and external rotation of hip; flexes trunk

Question 3

Tensor Fascia Larsen

Answer 3

Origin: anterior iliac crest
Insertion: lateral condyle of ribs
Action: abducts and flexes thigh at hip