Larrey's sign
Encyclopedia
Larrey's sign is a clinical sign
Medical sign
A medical sign is an objective indication of some medical fact or characteristic that may be detected by a physician during a physical examination of a patient....

 in which patients with sacroiliitis
Sacroiliitis
In medicine, sacroiliitis is an inflammation of the sacroiliac joint. Sacroiliitis is a feature of spondylarthropathies .-External links:*...

 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.
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