Iliacus muscle

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Description:

Origin:
Superior half of the iliac fossa, the inner lip of the iliac crest, the anterior ligaments of the sacroiliac joint, and the superior surface of the lateral portion of the sacrum

Insertion:
Converges with the psoas major tendon to the lesser trochanter of femur; some fibers pass below the trochanter onto the medial surface of the proximal femur

Actions:
Flexes the hip joint

Nerve supply:
Femoral nerve

Blood supply:
Branches of the internal and external iliac arteries