• Thomas J Wilson, Zarina S Ali, Gavin A Davis, Nora F Dengler, Ketan Desai, Debora Garozzo, Fernando Guedes, Megan M Jack, Line G Jacques, Thomas Kretschmer, Mark A Mahan, Rajiv Midha, Willem Pondaag, Ross C Puffer, Lukas Rasulic, Wilson Z Ray, Elias Rizk, Carlos A Rodriguez-Aceves, Yuval Shapira, Brandon W Smith, Mariano Socolovsky, Robert J Spinner, and Eric L Zager.
• 1Department of Neurosurgery, Stanford University, Stanford, California.
• J. Neurosurg. 2024 Aug 16: 191-9.

ObjectiveCommon peroneal (fibular) neuropathy is the most common mononeuropathy of the lower extremity. Despite this, there are surprisingly few studies on the topic, and a knowledge gap remains in the literature. As one attempts to address this knowledge gap, a core outcome set (COS) is needed to guide the planning phases of future studies to allow synthesis and comparability of these studies. The objective of this study was to develop the COS-common peroneal neuropathy (CoPe) using a modified Delphi approach.MethodsA 5-stage approach was used to develop the COS-CoPe: 1) stage 1, consortium development; 2) stage 2, a literature review to identify potential outcome measures; 3) stage 3, a Delphi survey to develop consensus on outcomes for inclusion; 4) stage 4, a Delphi survey to develop definitions; and 5) stage 5, a consensus meeting to finalize COS and definitions. The study followed the COS-STAndards for Development (COS-STAD) recommendations.ResultsThe Core Outcomes in Nerve Surgery (COINS) Consortium comprised 23 participants, all neurological surgeons, representing 13 countries. The final COS-CoPe consisted of 31 data points/outcomes covering domains of demographics, diagnostics, patient-reported outcomes, motor/sensory outcomes, and complications. Appropriate instruments, methods of testing, and definitions were set. The consensus minimum duration of follow-up was 12 months. The consensus optimal time points for assessment were preoperatively and 3, 6, 12, and 24 months postoperatively.ConclusionsThe COINS Consortium developed a consensus COS and provided definitions, methods of implementation, and time points for assessment. The COS-CoPe should serve as a minimum set of data that should be collected in all future neurosurgical studies on common peroneal neuropathy. Incorporation of this COS should help improve consistency in reporting, data synthesis, and comparability, and should minimize outcome reporting bias.

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