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Published on: March 31, 2023
Cortical evoked potentials used for placement of a laminotomy lead array: a case report
Paul L Penar1, Joseph McSherry
1Division of Neurosurgery, The University of Vermont College of Medicine and Fletcher Allen Health Care, Burlington, VT 05401, USA. paul.penar@vtmednet.org
Objective:
We describe a technique for placement of a cervical spinal cord electrode under general anesthesia using the contacts as cortical evoked potential stimulating electrodes.
Methods:
A 37-year-old man required revision of the percutaneous lead of a spinal cord stimulator system placed for right upper extremity pain. A Resume-TL laminotomy lead was inserted at the C5-6 interspace in the prone position under general anesthesia. The contacts were functionally over the right dorsal column by evoked potential recording, despite the apparent midline position of the lead.
Results:
Postoperatively, the patient had excellent coverage and pain relief at the right shoulder and extremity. There was no stimulation perceived on the left side of the body.
Conclusion:
This technique allows for intraoperative testing under general anesthesia in laminotomy lead placement to localize the optimal position of the lead.
