Posterior inferior iliac spine

The posterior inferior iliac spine is an anatomical landmark that describes a bony "spine", or projection, at the posterior and inferior surface of the iliac bone.

Posterior inferior iliac spine
Right hip bone. External surface. (Posterior inferior spine labeled at center left.)
Details
Identifiers
Latinspina iliaca posterior inferior
TAA02.5.01.114
FMA63615
Anatomical terms of bone

It is one of two such spines on the posterior surface, the other being the posterior superior iliac spine. These two spines are separated by a bony notch. They appear as two dimples in the skin, at the level of the lower back.

The posterior inferior iliac spine corresponds with the posterior extremity of the auricular surface.

Additional images

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References

This article incorporates text in the public domain from page 234 of the 20th edition of Gray's Anatomy (1918)


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