Ilium — Free Anatomy Illustration

Anatomy

Ilium

The ilium as a single component of the hip bone: a broad, fan-shaped, wing-like superior plate of pale ivory to off-white bone. It has a long curved superior border forming the iliac crest, distinct anterior and posterior borders with visible spines, a wide smooth concave inner surface forming the iliac fossa, and a smooth convex outer surface. The blade is thin and expanded superiorly, while the inferior body becomes narrower and thicker toward the acetabular region. Posteriorly, the inferior area includes a roughened auricular articular surface and subtle attachment markings that contrast with the smoother cortical bone.

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