Iliacus muscle

The iliacus muscle (Latin for " iliac muscle ") is a skeletal muscle of the lower extremity, specifically the ventral ( anterior ) lumbar muscles.

It is functional with the large lumbar muscle ( psoas major) - in humans even with the not always present small lumbar muscle ( psoas minor) - summarized for lumbar -iliac muscle ( Musculus iliopsoas ).

Course

The musculus iliacus arises from the pit ( iliac fossa ) of the iliac bone ( ilium ) and the anterior inferior iliac spine ( anterior inferior iliac spine ).

He unites with the lumbar muscles and gets enveloped in their muscle binding ( iliac fascia ) and lumbar -iliac muscle by muscle Gate ( muscular lacuna ) to the small trochanter ( lesser trochanter ) of the femur, to which he attaches.

Function

In the hip joint the muscle causes flexion (flexion ), he is the most powerful hip flexors ( flexor ) of man. In addition, he is responsible for outward rotation of the hip joint ( external rotation ). Furthermore, it results in one-sided tension side bending ( lateral flexion ) and with bilateral tension diffraction (inclination ) of the spine.

• Skeletal muscle of the trunk