Sacrum is also called as vertebra Magnum.
Sacrum is triangular in shape hence it has base or upper surface , apex or lower end and 4 surfaces.
Surfaces
Pelvic surface Dorsal surface Right lateral surface Left lateral surface.
Base
| 577 | | OS SACRUM [VERTEBRAE SACRALES I - V] | SACRUM [SACRAL VERTEBRAE I - V] | |
| 578 | Basis ossis sacri | Base | ||
| 579 | Promontorium | Promontory | ||
| 580 | Ala ossis sacri | Ala; wing | ||
| 581 | Processus articularis superior | Superior articular process | ||
| 582 | Pars lateralis | Lateral part | ||
| 583 | Facies auricularis | Auricular surface | ||
| 584 | Tuberositas ossis sacri | Sacral tuberosity | ||
| 585 | Facies pelvica | Pelvic surface | ||
| 586 | Lineae transversae | Transverse ridges | ||
| 587 | Foramina intervertebralia | Intervertebral foramina | ||
| 588 | Foramina sacralia anteriora | Anterior sacral foramina | ||
| 589 | Facies dorsalis | Dorsal surface | ||
| 590 | Crista sacralis mediana | Median sacral crest | ||
| 591 | Foramina sacralia posteriora | Posterior sacral foramina | ||
| 592 | Crista sacralis medialis | Intermediate sacral crest | ||
| 593 | Crista sacralis lateralis | Lateral sacral crest | ||
| 594 | Cornu sacrale | Sacral cornu; sacral horn | ||
| 595 | Canalis sacralis | Sacral canal | ||
| 596 | Hiatus sacralis | Sacral hiatus | ||
| 597 | Apex ossis sacri; apex ossis sacralis | Apex |
| 598 | OS COCCYGIS; COCCYX [VERTEBRAE COCCYGEAE I - IV] | COCCYX [COCCYGEAL VERTEBRAE I - IV] | ||
| 599 | Cornu coccygeum | Coccygeal cornu | ||
| 600 | SKELETON THORACIS | THORACIC SKELETON | ||
| 601 | COSTAE [I-XII] | RIBS [I-XII] | ||
| 602 | Costae verae [I-VII] | True ribs [I-VII] | ||
| 603 | Costae spuriae [VIII-XII] | False ribs [VIII-XII] | ||
| 604 | Costae fluctuantes [XI-XII] | Floating ribs [XI-XII] | ||
| 605 | Cartilago costalis | Costal cartilage |