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American Society for Action on Pain

UI - 000094

AU - Moossy JJ

AU - Nashold BS Jr.

TI - Dorsal root entry zone lesions for conus medullaris root avulsions

AB - We have found dorsal root entry zone (DREZ) lesions to be an effective treatment of chronic

deafferentation pain in patients who have had avulsions of the dorsal rootlets from the spinal cord. Eight

patients were operated in whom chronic pain of the lower extremity resulted from dorsal root avulsions from

the conus medullaris. In 7 of the 8 patients, the mechanism of injury was a motor vehicle accident; all 7

sustained severe pelvic trauma. Seven of the 8 patients remained pain-free, off all narcotics, with an average

follow-up of 33 months. All patients had DREZ lesions of the conus performed by radiofrequency


SO - Applied Neurophysiology 1988;51:198-205