• Stereotact Funct Neurosurg · Jan 2019

    Placement and Anchoring of Trigeminal Neurostimulation Electrodes: Technical Report.

    • Willard S Kasoff and Robert W Bina.
    • Department of Neurosurgery, University of Arizona College of Medicine, Tucson, Arizona, USA, wkasoff@email.arizona.edu.
    • Stereotact Funct Neurosurg. 2019 Jan 1; 97 (5-6): 285-292.

    BackgroundPeripheral neurostimulation (PNS) for medically refractory trigeminal and craniofacial pain is an emerging alternative to traditional surgical approaches. Technical problems with craniofacial PNS have included electrode migration and erosion, limiting the utility and cost-effectiveness of this procedure.ObjectiveTo review our institutional surgical technique for trigeminal PNS implantation, focusing on a novel technique for electrode anchoring.MethodsConsecutive cases of permanent craniofacial PNS placement by a single surgeon over 36 months were reviewed for surgical technique and technical outcomes. Electrodes were placed percutaneously with open anchoring to the pericranium at a separate parietal incision.ResultsSixteen systems (53 electrodes) were implanted in 14 patients. Median follow-up was 13 months (range, 5-29 months). Electrode placement was successful in all cases with no intraoperative complications. There was 1 lead migration (6.3% per patient; 1.8% per lead) and no cases of erosion. Two patients (14.3%) required explant for infection, 1 of whom was successfully reimplanted. Three patients (21.4%) underwent surgical revision other than for infection.ConclusionsWe present an improved method for craniofacial PNS surgery which introduces a separate incision for electrode anchoring at the parietal boss. This technique simplifies the procedure and greatly reduces rates of erosion and migration, improving patient comfort and satisfaction.© 2020 S. Karger AG, Basel.

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