Utility of Motor Evoked Potential in Identification and Treatment of Suboptimal Positioning in Pediatric Craniovertebral Junction Abnormalities: A Case Report.

Atlantoaxial dislocation (AAD) poses a significant challenge in terms of positioning and surgical fixation as there is increased risk of cord compression and ischemia. Intraoperative neuromonitoring (IONM) provides a useful tool to identify impending position-related dysfunction. Here we demonstrate the utility of using transcranial motor evoked potential (Tc-MEP) to identify and treat suboptimal positioning in a 13-year-old patient with AAD and Arnold-Chiari malformation.