Multimodality intraoperative neuromonitoring is routinely used to assess spinal cord function and is the current standard of care for minimizing postoperative neurological deficits during spinal deformity surgery. The advent of motor evoked potential monitoring significantly improved the sensitivity of somatosensory-evoked potential monitoring, which was the historic gold standard. Early identification of threats to neurological function provides an opportunity for a timely and effective response that ideally allows the surgical team to avert postoperative weakness or paralysis.