The crest of the ilium (or iliac crest) is the superior border of the wing of ilium and the superolateral margin of the greater pelvis. ==Structure== The iliac crest stretches posteriorly from the anterior superior iliac spine (ASIS) to the posterior superior iliac spine (PSIS). Behind the ASIS, it divides into an outer and inner lip separated by ...
The large flat portion of the pelvis bone from which bone graft may be taken 
<anatomy> The hip bone in which a large quantity of bone marrow is concentrated. ... (16 Dec 1997) ... 
the thickened, expanded upper border of the ilium.
The arching ridge of bone on the upper border of the ilium.
Type: Term Definitions: 1. the long, curved upper border of the wing of the ilium. Synonyms: crista iliaca
The iliac crest marks the upper ridge of the broad ala, or wings, of the ilium. The iliac crest features an internal and external lip, with an intermediate line between the two.