Background
Anatomy
Unusual anatomic convergence of ilium, pubis and ischium
- covered entirely by hyaline cartilage
- except at acetabular fossa, which is the site of attachment of the ligamentum teres
- deepened by peripheral fibrocartilage labrum
2 column theory (Letournel and Judet)
Anterior Column
- superior pubic ramus
- anterior acetabular wall, anterior dome