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Sarica C, Iorio-Morin C, Aguirre-Padilla DH, Paff M, Villeneuve SA, Vetkas A, Yamamoto K, Samuel N, Milano V, Loh A, Santyr B, Zemmar A, Lozano AM, Hodaie M. Clinical outcomes and complications of peripheral nerve field stimulation in the management of refractory trigeminal pain: a systematic review and meta-analysis. J Neurosurg 2022; 137:1387-1395. [PMID: 35180702 DOI: 10.3171/2021.12.jns212869] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Accepted: 12/22/2021] [Indexed: 11/06/2022]
Abstract
OBJECTIVE Peripheral nerve field stimulation (PNFS) is a tool in the armamentarium of treatment options for trigeminal pain. The efficacy of this modality in mitigating trigeminal pain remains unclear. The aim of this study was to examine the existing literature on PNFS and elucidate pain score outcomes associated with its use in patients with trigeminal pain. METHODS A systematic review and meta-analysis was performed in accordance with the PRISMA framework. The PubMed, Web of Science, and Scopus databases were queried on June 10, 2020. Studies reporting pain outcomes in more than 5 adult patients treated with PNFS for facial pain were included. The primary outcome of the study was the mean difference in the visual analog scale (VAS) score from the last follow-up to baseline, and it was analyzed by an inverse-variance, random-effect model. The risk of bias was assessed using the Newcastle-Ottawa Scale and a funnel plot. RESULTS Of the 4597 studies screened for inclusion, 46 relevant full-text articles were assessed for eligibility. Eleven observational cohort studies from the 46 articles were found to be eligible, and reported on a total of 109 patients. In 86% (94/109) of cases, trial stimulation was successful and followed by a permanent system implantation. VAS scores improved by 75% (mean difference 6.32/10 points, 95% CI 5.38-7.27 points) compared to baseline. Seventy-six percent (42/55) of patients became medication free or required lower doses of medications. The complication rate necessitating surgical revision was estimated at 32% per procedure. CONCLUSIONS These findings support the belief that PNFS provides effective, long-term pain control for trigeminal pain. Statistical heterogeneity was considerable across all studies. Future work should be aimed at conducting double-blind randomized controlled trials to determine the utility of PNFS for treating various forms of trigeminal pain for which limited therapeutic options exist.
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Affiliation(s)
- Can Sarica
- 1Division of Neurosurgery, Department of Surgery, University of Toronto, Ontario, Canada
| | - Christian Iorio-Morin
- 2Division of Neurosurgery, Department of Surgery, Université de Sherbrooke, Quebec, Canada
| | | | - Michelle Paff
- 4Department of Neurosurgery, University of California, Irvine, Orange, California
| | | | - Artur Vetkas
- 1Division of Neurosurgery, Department of Surgery, University of Toronto, Ontario, Canada
- 5Department of Neurosurgery, Tartu University Hospital, University of Tartu, Estonia
| | - Kazuaki Yamamoto
- 1Division of Neurosurgery, Department of Surgery, University of Toronto, Ontario, Canada
| | - Nardin Samuel
- 1Division of Neurosurgery, Department of Surgery, University of Toronto, Ontario, Canada
| | - Vanessa Milano
- 1Division of Neurosurgery, Department of Surgery, University of Toronto, Ontario, Canada
| | - Aaron Loh
- 1Division of Neurosurgery, Department of Surgery, University of Toronto, Ontario, Canada
| | - Brendan Santyr
- 1Division of Neurosurgery, Department of Surgery, University of Toronto, Ontario, Canada
| | - Ajmal Zemmar
- 1Division of Neurosurgery, Department of Surgery, University of Toronto, Ontario, Canada
- 6Department of Neurosurgery, Henan University School of Medicine, Zhengzhou, China
- 7Department of Neurosurgery, University of Louisville, Kentucky; and
| | - Andres M Lozano
- 1Division of Neurosurgery, Department of Surgery, University of Toronto, Ontario, Canada
- 8Krembil Research Institute, Toronto, Ontario, Canada
| | - Mojgan Hodaie
- 1Division of Neurosurgery, Department of Surgery, University of Toronto, Ontario, Canada
- 8Krembil Research Institute, Toronto, Ontario, Canada
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