title: The value of bilateral ipsilateral and contralateral motor evoked potential monitoring in scoliosis surgery.
abstract: Intraoperative monitoring (IOM) of the motor pathways is a routine procedure for ensuring integrity of corticospinal tracts during scoliosis surgery. We have previously demonstrated presence of ipsilateral motor evoked potentials (MEPs) during IOM for scoliosis surgery, but its significance was uncertain. In this case series, we show concurrent ipsilateral and contralateral MEP amplitude changes obtained with cortical stimulation are of value in reducing false positive observations during IOM. The use of this easily recordable MEP is thus advocated as a diagnostic adjunct to contralateral MEPs for scoliosis and spinal surgery.
authors.affiliation: Department of Neurology, National Neuroscience Institute, Singapore General Hospital, Outram Road, Singapore, Singapore 169608. gnrlyl@sgh.com.sg
authors.forename: Y L
authors.initials: YL
authors.lastname: Lo
authors.forename: Y F
authors.initials: YF
authors.lastname: Dan
authors.forename: A
authors.initials: A
authors.lastname: Teo
authors.forename: Y E
authors.initials: YE
authors.lastname: Tan
authors.forename: W M
authors.initials: WM
authors.lastname: Yue
authors.forename: S
authors.initials: S
authors.lastname: Raman
authors.forename: S B
authors.initials: SB
authors.lastname: Tan
mesh_terms: D000293:Adolescent; D002648:Child; D004558:Electric Stimulation / Q000379:methods; D004566:Electrodes; D004568:Electrodiagnosis / Q000379:methods*; D019054:Evoked Potentials, Motor / Q000502:physiology*; D005073:Evoked Potentials, Somatosensory / Q000502:physiology; D005260:Female; D007839:Functional Laterality / Q000502:physiology; D006801:Humans; D007431:Intraoperative Complications / Q000209:etiology / Q000503:physiopathology / Q000517:prevention & control*; D016343:Monitoring, Intraoperative / Q000379:methods*; D009044:Motor Cortex / Q000502:physiology; D009431:Neural Conduction / Q000502:physiology; D011237:Predictive Value of Tests; D011712:Pyramidal Tracts / Q000502:physiology; D012600:Scoliosis / Q000473:pathology / Q000601:surgery*; D013119:Spinal Cord Injuries / Q000209:etiology / Q000503:physiopathology / Q000517:prevention & control*; D013979:Tibial Nerve / Q000502:physiology; D055815:Young Adult