• Mickey E Abraham, Moshe Shalom, Julian Gendreau, Justin Gold, Garret Pierzchajlo, Noah Pierzchajlo, Sachiv Chakravarti, Ronald Sahyouni, Nikhil Murthy, and Joseph Ciacci.
• Department of Neurosurgery, University of California San Diego, La Jolla, California, USA. Electronic address: mabraham@ucsd.edu.
• World Neurosurg. 2023 Jun 21.

ObjectiveSpinal cord injury (SCI) is responsible for approximately 18,000 trauma cases each year in the United States, often resulting in debilitating motor and autonomic disability. Neuromodulation is a rapidly growing field of interest in the neurosurgical field and has additionally shown promise in the treatment of SCI. This review characterizes all clinical trials to date studying neuromodulation for the treatment of SCI.MethodsThe ClinicalTrials.gov database was queried using the search terms "neuromodulation" and "spinal cord injury" on ClinicalTrials.gov. Trials were excluded if they were not yet recruiting, suspended, terminated early, or of unknown status.ResultsIn total, 33 clinical trials were included in this study. Of the 33 trials, 8 were completed and 1 had published results. Most trials studied deficits of motor function (60%) and bladder control (37%). Fourteen studies (42.4%) utilized transcutaneous spinal stimulation, 7 (21.2%) utilized epidural electrical stimulation, and 6 (18.2%) utilized tibial nerve stimulation. There was an uptrend of clinical trials studying SCI indexed on PubMed, which was comparable to the increased number of publications indexed overall (Pearson correlation, P < 0.001). Of these, only 1 study regarding home tibial nerve stimulation for neurogenic bladder had published data, which was performed with no adverse events.ConclusionsNeuromodulation in SCI studies currently assess transcutaneous spinal stimulation, epidural electrical stimulation, and tibial nerve stimulation. There is currently 1 completed study suggesting feasibility of home neuromodulation techniques without adverse events. The results of trials that will be completed in the next few years will help dictate the potential of neuromodulation as a treatment for SCI.Copyright © 2023 The Author(s). Published by Elsevier Inc. All rights reserved.

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