Diagram of posterior muscles.

The iliacus muscles are flat triangular muscles located in the groin area at the front (anterior) of each side of the body. There is one iliacus muscle at the top of each leg.

Origin, Insertion and Actions of the Iliacus muscles:

Point(s) of Origin:
  • Anterior, inferior iliac spine, on the ilium bone.
  • Superior two thirds of iliac fossa, on the ilium bone.
Point(s) of Insertion:
  • Lesser trochanter, which is also called the 'small trochanter', towards the top of the femur (thigh) bone.
  • Flexes (bends) and rotates the thigh (upper-leg) laterally at the hip joint.

The iliacus muscles are labelled on the diagram of human anterior muscles.

More about Muscles:

The following are some popular pages in the section about the human muscular system:

There are also more pages about the words used to describe muscles (terminology), the anatomy and physiology of muscles, muscular disorders and associated topics. See also books about sports medicine.

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