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Sunday September 7, 2008
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Muscles of the Lower Extremity / Iliopsoas
Page: 1
| Origin |
Psoas from anterior surfaces and lower borders of transverse processes of L1 - L5 and bodies and discs of T12 - L5; Iliacus from upper 2/3 of iliac fossa of ilium, internal lip of iliac crest, lateral aspect of sacrum, ventral sacroiliac ligament, and lower portion of iliolumbar ligament |
| Insertion |
Lesser trochanter |
| Action |
Flex the torso and thigh with respect to each other |
| Innervation |
Psoas from direct fibers of L1 - L3 of lumbar plexus; Iliacus from muscular branch of femoral nerve |
Arterial
Supply |
Lumbar branch of iliopsoas branch of internal iliac artery |
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