Valérie Decrouy-Duruz September 5, 2017

Journal of Neurosurgery, Ahead of Print. OBJECTIVEChronic neuropathic pain after peripheral nerve injury is a major clinical problem. Its management is difficult, and therapeutic approaches vary and include oral medication, neurostimulation, and surgery. The aim of this study was to assess the adequacy of surgical nerve revision in a large series of patients with long-term follow-up.METHODSThe authors reviewed the charts of 231 patients (335 nerve injuries) who experienced neuropathic pain after peripheral nerve injury and underwent surgery for nerve revision at the authors’ institution between 1997 and 2012. The following parameters were recorded for each patient: history, location, duration, and severity of the pain and details of nerve revision surgery. In addition, patients were invited to participate in a follow-up consultation and were asked to score their pain at that time. Current medications and examination findings were also documented.RESULTSElective surgery was the source of nerve injury for 55.4% of the patients. The lower extremity was the most commonly involved anatomical region (54.3%), followed by the lower abdomen (16.4%) and the thoracic region (13%). The mean time between the onset of injury and revision surgery was 48 months. On average, 1.3 injured nerves per patient were explored, and surgery was performed 1.2 times per patient. Each nerve underwent revision 1.1 times on average. Neuromas-in-continuity and scar-tethered nerves were observed in 205 nerves (61%) and terminal neuromas were observed in 130 nerves (39%). The authors performed 186 (56%) neurolyses and 149 (44%) neuroma resections and translocations. The mean follow-up of the 127

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