iliacus

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il·i·a·cus (mus·cle)

[TA]
origin, iliac fossa; insertion, via a common tendon with psoas major into anterior surface of lesser trochanter of the femur, and capsule of hip joint; action, flexes thigh and rotates it medially; nerve supply, lumbar plexus.
Synonym(s): musculus iliacus [TA], iliac muscle

iliacus

The part of the ILIOPSOAS muscle arising from the inside of the back wall of the pelvis (the iliac fossa and sacrum) and being inserted into the top of the front of the FEMUR. The iliacus helps to flex the hip joint in walking.