Posterior Superior Iliac Spine

Description

Palpation of the Posterior superior iliac spine (PSIS)

The PSIS is marked

The PSIS is marked in blue

Name

• Posterior Superior Iliac Spine
• PSIS
• Spina iliaca posterior superior

General

• Bony projection of the posterior ilium at the posterior end of the iliac crest
• Not as easily palpated as the anterior superior iliac spine
• Often noted on exam superficially to the "dimple of venous" above the medial gluteal region

Attachments

• Multifidus
• Sacrospinous Ligament
• Sacrotuberous Ligament

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Clinical Significance

• Needs to be updated

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See Also

• Hip Pain Main
• Hip Anatomy Main
• Physical Exam Hip

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