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The Iliacus Muscle - Definition

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Updated May 07, 2008

The Iliacus Muscle

The Iliacus Muscle

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Definition: The Iliacus is a flat, triangular muscle, which lies deep within in the pelvis. It attaches from the pelvis to the thigh bone (femur). Its primary action is to flex and rotate the thigh.

It is considers one of the muscles that make up the hip flexors; a group of muscles that bring the legs and trunk together in a flexion movement.

The muscles that make up the hip flexors include:

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