Iliacus
Hip & Pelvis
The iliac fossa muscle that joins psoas major to form iliopsoas — together they are the body's most powerful hip flexors, critical for every step you take.
Function
Flexes thigh and stabilizes hip
Origin
Iliac fossa, iliac crest, ala of sacrum
Insertion
Lesser trochanter via iliopsoas tendon
Innervation
Femoral nerve (L2-L3)