Pain relief from dorsal root entry zone lesions made with argon and carbon dioxide microsurgical lasers

S. K. Powers, J. E. Adams, M. S. Edwards, James E Boggan, Y. Hosobuchi

Research output: Contribution to journalArticlepeer-review

46 Scopus citations

Abstract

Argon and carbon dioxide microsurgical lasers were used to produce lesions in the dorsal root entry zone (DREZ) experimentally in six cats and surgically in 21 patients who had denervation pain syndromes. The technique of producing lesions, the histological and physiological changes seen in the cat spinal cord, and the results of treatment in the clinical series are discussed. Lesions were produced within the DREZ without new involvement of the dorsal column system or corticospinal tract in all but one patient. Based on their subjective evaluation, two-thirds of the patients were relieved of more than 50% of their preoperative pain. These experimental results and clinical experience suggest that the argon and carbon dioxide lasers effectively produce localized microsurgical lesions in the DREZ. The concept that an abnormality involving either neurons in the substantia gelatinosa or internuncial fibers in Lissauer's tract is responsible for pain in patients with primary sensory nerve deafferentation is discussed.

Original languageEnglish (US)
Pages (from-to)841-847
Number of pages7
JournalJournal of Neurosurgery
Volume61
Issue number5
StatePublished - 1984
Externally publishedYes

ASJC Scopus subject areas

  • Clinical Neurology
  • Neuroscience(all)

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