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 not labeled, but region is visible to left of gluteus medius.)
Latin spina iliaca posterior superior
Gray's p.234
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 from a public domain edition of Gray's Anatomy.