Osteology

Sacrum, posterior view

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Image #154-5

Osteology

Sacrum, posterior view

1. Base
2. Mamillary process
3. Lateral part
4. Articular surface
5. Dorsal sacral foramen (pelvic foramen in background)
6. Intermediate sacral crest
7. Sacral horn
8. Apex
9. Sacral canal
10. Superior articular process
11. Sacral tuberosity
12. Accessory articular facet (of sacroiliac joint)
13. Middle sacral crest
14. Lateral sacral crest
15. Sacral hiatus