Level Diagnosis Using Spinal Cord Evoked Potentials in Cervical Myelopathy
Spinal cord evoked potentials could offer some functional information needed for the diagnosis of the level of spinal cord lesions. We have recorded the ascending potential evoked by direct spinal cord stimulation in the thoracic spine since 1979. The potential was recorded at each intervertebral disk level. However, we noticed that the positivization and the augmentation were recognized at different positions of the recording electrode at the same disk level. We were convinced that for precise diagnosis it was necessary to take recordings at multiple levels in the cervical spine. Therefore, recordings at multiple levels have been performed in the cervical spine using personal computer since 1985. The purpose of this paper is to report the changes in the wave form of the spinal cord evoked potentials, and the cases in which this examination method was applied usefully.
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