Neurogenic motor evoked potentials: A prospective comparison of stimulation methods in spinal deformity surgery

Robert M. Komanetsky, Anne M. Padberg, Lawrence G. Lenke, Keith H. Bridwell, Mary H. Russo, Michael P. Chapman, Christopher L. Hamill

Research output: Contribution to journalArticle

25 Scopus citations

Abstract

Neurogenic motor evoked potentials (NMEPs) elicited by spinal cord stimulation via the spinous processes (SP-NMEP) have been widely accepted as a sensitive method of monitoring motor tract function. SP-NMEP requires additional surgical dissection as well as electrodes within the wound, making the method somewhat inconvenient. A less invasive percutaneous method of spinal cord stimulation (PERC-NMEP) has more recently been described. We prospectively compared the SP-NMEP and PERC-NMEP methods in 184 patients undergoing 225 surgical procedures. Although SP-NMEP responses were more readily obtainable than PERC-NMEP, the reliability of the two methods was not significantly different. Both methods were found to be sensitive to neurologic deficit. The present study suggests that when responses are obtained, the percutaneous method is reliable enough to obviate the spinous process method of monitoring the motor function of the spinal cord.

Original languageEnglish
Pages (from-to)21-28
Number of pages8
JournalJournal of Spinal Disorders
Volume11
Issue number1
StatePublished - Mar 21 1998

Keywords

  • Motor evoked potential
  • Spinal cord
  • Spinal cord monitoring

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    Komanetsky, R. M., Padberg, A. M., Lenke, L. G., Bridwell, K. H., Russo, M. H., Chapman, M. P., & Hamill, C. L. (1998). Neurogenic motor evoked potentials: A prospective comparison of stimulation methods in spinal deformity surgery. Journal of Spinal Disorders, 11(1), 21-28.