Psoas Iliacus

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Psoas


    Psoa (G). The loin, a muscle of the loin

    Origin: Bodies of T12 to L4*
    Insertion: Lesser trochanter of femur
    Actions: Hip flexion, external rotation of thigh

*The psoas originates on the intervetebral discs and the adjacent bodies of T12 to L4. It pulls on the discs with each step we take, helping to pump the discs and keeping the disc material hydrated. 

    When the psoas is tight it can cause:
        Pelvic torsion - short leg
        Scoliosis
        Irritation of lumbar plexus
        Excess lordosis if both psoas are tight

Iliacus
    ilia, -co (L). The flank, loin

    Origin: Anterior aspect of ilium
    Insertion: Lesser trochanter of femur
    Actions: Hip flexion, external rotation of thigh

Iliopsoas
    Because the psoas and iliacus share a common insertion, some anatomy books refer to these muscles as the iliopsoas

Member Comments:

  • Joann D commented Wednesday 8th of May 2013 at 7:51:46PM

    This won't play.