Thursday, September 27, 2012

Dejerine’s Sign

Dejerine’s Sign
Clinical Pearl
Patients with radicular symptoms and pronounced Dejerine’s sign, especially if it is in the lumbar spine, should be told to bend the knees and lean into a wall during a cough or sneeze. This maneuver reduces intradiscal pressure and minimizes the effect of the cough or sneeze on the nerve root. A more worrisome situation is the sudden, unexpected absence of Dejerine’s sign when all other clinical findings indicate an active nerve root compression. The loss of the sign indicates fragmentation of the disc with momentary decompression of the nerve.

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