Spinal somatosensory evoked potential monitoring during microsurgery for syringomyelia: case reports.

Spinal cord function was monitored during surgery in 2 cases of syringomyelia. The intraoperative recording of spinal segmental and conduction potentials evoked at cervical levels by the stimulation of median and tibial nerves were essential in the definition of the extent of the lesion and was consistent with postoperative neurological outcome.