Dissection of iliopsoas muscle and lumbar plexus

Right iliopsoas muscle in relation to spine, pelvis and femur

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Image #185-2

Dissection of iliopsoas muscle and lumbar plexus

Right iliopsoas muscle in relation to spine, pelvis and femur

1. Medial arcuate ligament of diaphragm (medial lumbocostal arch)
2. Sympathetic trunk
3. Psoas major muscle
4. Ligament of vertebral body (cut in sagittal plane)
5. Iliac crest
6. Iliacus muscle
7. Greater trochanter
8. Lesser trochanter
9. Anterior longitudinal ligament (joined above this level by right crus of diaphragm which has been cutoff)
10. Dura mater (lying within vertebral canal)
11. Femoral nerve
12. Sacral bone
13. Lumbosacral trunk
14. Piriform muscle
15. Pubic bone
16. Obturator externus muscle