Posterior superior iliac spine

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Posterior superior iliac spine
Right hip bone. External surface. (Posterior superior spine labeled at center left.)
Surface anatomy of the back. Posterior superior iliac spine lies in the marking of S2.
Latin spina iliaca posterior superior
TA A02.5.01.113
FMA 49468
Anatomical terms of bone

The posterior border of the ala, shorter than the anterior, also presents two projections separated by a notch, the posterior superior iliac spine and the posterior inferior iliac spine. The posterior superior iliac spine serves for the attachment of the oblique portion of the posterior sacroiliac ligaments and the multifidus.

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

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