Dissection of female pelvis froma lateral approach

Contents of greater sciatic foramen, close-up lateral view

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Image #159-1

Dissection of female pelvis froma lateral approach

Contents of greater sciatic foramen, close-up lateral view

The specimen has been rotated slightly and is viewed here from a somewhat posterolateral direction.

1. Lateral sacral crest
2. Piriform muscle (emerging through greater sciatic foramen)
3. Inferior gluteal artery (cut off)
4. Inferior gluteal veins
5. Upper pointer: Nerve to obturator internus muscle (cut off) Lower pointer: Inferior gluteal nerve
6. Left pointer: Middle cluneal nerve (traced from dorsal ramus of 2nd sacral nerve) Right pointer: Coccygeal branch of inferior gluteal artery
7. Left pointer: Sacrotuberous ligament Right pointer: Sacrospinous ligament
8. Pudendal nerve (passing through lesser sciatic foramen)
9. Internal pudendal artery
10. Superior gluteal artery
11. Superior gluteal vein
12. Superior gluteal nerve
13. Parietal pelvic fascia (completing closure of greater sciatic foramen)
14. Sciatic nerve (upper pointer, tibial nerve; lower pointer, common peroneal nerve)
15. Margin of greater sciatic foramen
16. Acetabular labrum
17. Levator ani muscle
18. Margin of lesser sciatic foramen