Intraoperative monitoring study of ipsilateral motor evoked potentials in scoliosis surgery.

Lo, Y L; Dan, Y F; Tan, Y E; Fook-Chong, S; Tan, S B; Tan, C T; Raman, S · Eur Spine J · 2006

case_series · Level IV

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Abstract

Ipsilateral motor evoked potentials (MEPs) in spinal cord surgery intraoperative monitoring is not well studied. We show that ipsilateral MEPs have significantly larger amplitudes and were elicited with lower stimulation intensities than contralateral MEPs. The possible underlying mechanisms are discussed based on current knowledge of corticospinal pathways. Ipsilateral MEPs may provide additional information on the integrity of descending motor tracts during spinal surgery monitoring.

Medical subject headings