Barré sign

Pronunciation: bah-ra'

Definition: when a patient with a pyramidal tract lesion is lying prone, and the affected leg is passively flexed 90° at the knee, the patient cannot maintain the lower leg in a vertical position; instead, it drops into full extension.

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© Copyright 2018 Wolters Kluwer. All Rights Reserved. Review date: Sep 19, 2016.

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