Psoas Major Muscle
The iliacus muscle is an important hip flexor that stretches from the hip bone down to the femur.
Iliacus Muscle (Musculus iliacus)
Attachments of Iliacus Muscle
Origin (proximal attachment):
a. Iliac fossa of os coxa.
Insertion (distal attachment):
a. Lesser trochanter of femur.
Actions of Iliacus on the thigh (femur):
a. Flexes the thigh at hip.
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b. Laterally rotates thigh at hip.
c. Flexes trunk & pelvis on thigh (if origin & insertion are reversed).
Nerve to muscle and its spinal segment:
Femoral nerve (L2-L3).
An Overview of the Anterior Muscles of the Thigh
Test yourself while observing the Iliacus muscle