Larrey's sign

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|differential = Sacroiliitis

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Larrey's sign is a clinical sign in which patients with sacroiliitis experience pain in the sacroiliac area of the lower back on sitting down suddenly on a hard chair.

The sign is named after Dominique Larrey.{{WhoNamedIt|synd|3663|Larrey's sign}}D. J. Larrey. Mémoires de chirurgie militaire, et campagnes. 4 volumes. Paris 1812-1817.