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The Journal of Bone and Joint Surgery 81:1450-3 (1999)
© 1999 The Journal of Bone and Joint Surgery, Inc.

Partial Avulsion of the Cauda Equina Associated with a Lumbosacral Fracture-Dislocation. A Case Report*

YASUAKI MURATA, M.D.{dagger}, MOTOHIRO LEE, PH.D.{ddagger}, MASAYA MIMURA, M.D., PH.D.{ddagger}, ATSUSHI MURATA, M.D., PH.D.{ddagger} and SUMITO SHIMIZU, M.D.{ddagger}, CHIBA, JAPAN

Investigation performed at Funabashi-Municipal Medical Center, Chiba


   Introduction
 
Avulsion of the lumbosacral nerve roots is rare. Since 1960, when, we believe, a case was reported for the first time, only thirty-five of these avulsions have been reported2,3,5,6, to our knowledge. In most patients, unilateral avulsion of the lumbosacral nerve roots is associated with a fracture of the pelvis and the lower limb. The diagnosis of a nerve-root avulsion is difficult to confirm. Radiographic evidence of a pseudomeningocele is the most reliable sign of such an avulsion, but a pseudomeningocele is not always present6. The role of magnetic resonance imaging and computed tomography myelograms in the diagnosis of nerve-root avulsions is unclear.

We report the case of a patient who had a partial avulsion of the cauda equina associated with a lumbosacral fracture-dislocation that was diagnosed with magnetic resonance imaging and computed tomography myelograms.


   Case Report
 
A nineteen-year-old man was first seen at the Funabashi-Municipal Medical Center in Chiba, . . . [Full Text of this Article]


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