Posterior view of the sacral bone
| Term name | Layer | |
|---|---|---|
| 1 | Sacral hiatus | Layer 1 |
| 2 | Apex | Layer 1 |
| 3 | Sacral cornu; sacral horn | Layer 1 |
| 4 | Lateral sacral crest | Layer 1 |
| 5 | Posterior sacral foramina | Layer 1 |
| 6 | Sacral tuberosity | Layer 1 |
| 7 | Auricular surface | Layer 1 |
| 8 | Sacral canal | Layer 1 |
| 9 | Intermediate sacral crest | Layer 1 |
| 10 | Superior articular process | Layer 1 |
| 11 | Median sacral crest | Layer 1 |