Description
The arcuate line of ilium is the narrow ridge found along the internal surface of the bone. It extends anteromedially from the anterior margin of the auricular surface of ilium to the iliopubic eminence.
It contributes to the formation of the linea terminalis (pelvic brim), which is a distinct ridge that separates the greater pelvis from the lesser pelvis. The arcuate line of ilium also forms the lower part of the medial border of ilium.
Related parts of the anatomy
