matta roof arc measurements

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