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©The Author(s) 2021. Published by Baishideng Publishing Group Inc. All rights reserved.
World J Radiol. Jan 28, 2021; 13(1): 29-39
Published online Jan 28, 2021. doi: 10.4329/wjr.v13.i1.29
Published online Jan 28, 2021. doi: 10.4329/wjr.v13.i1.29
Magnetic resonance imaging findings of redundant nerve roots of the cauda equina
Erkan Gökçe, Murat Beyhan, Department of Radiology, Tokat Gaziosmanpasa University, Faculty of Medicine, Tokat 60100, Turkey
Author contributions: Gökçe E designed and supervised the study; Beyhan M collected the data; Gökçe E and Beyhan M participated in literature research and manuscript preparation, and read and approved the final version.
Institutional review board statement: This study was reviewed and approved by the Ethics Committee of the Tokat Gaziosmanpasa University Faculty of Medicine (No. 19- KAEK-099).
Informed consent statement: Patients were not required to give informed consent for the study as the figures from the picture archiving and communication system were studied retrospectively.
Conflict-of-interest statement: All authors declare no conflicts-of-interest related to this article.
Data sharing statement: No additional data are available.
Open-Access: This article is an open-access article that was selected by an in-house editor and fully peer-reviewed by external reviewers. It is distributed in accordance with the Creative Commons Attribution NonCommercial (CC BY-NC 4.0) license, which permits others to distribute, remix, adapt, build upon this work non-commercially, and license their derivative works on different terms, provided the original work is properly cited and the use is non-commercial. See: http://creativecommons.org/licenses/by-nc/4.0/
Corresponding author: Erkan Gökçe, MD, Chief Doctor, Department of Radiology, Tokat Gaziosmanpasa University, Faculty of Medicine, Kaleardı Mah., Muhittin Fisunoglu Cad., Tokat 60100, Turkey. drerkangokce@gmail.com
Received: July 24, 2020
Peer-review started: July 24, 2020
First decision: November 14, 2020
Revised: November 26, 2020
Accepted: December 4, 2020
Article in press: December 4, 2020
Published online: January 28, 2021
Peer-review started: July 24, 2020
First decision: November 14, 2020
Revised: November 26, 2020
Accepted: December 4, 2020
Article in press: December 4, 2020
Published online: January 28, 2021
Core Tip
Core Tip: In this study, magnetic resonance imaging findings of redundant nerve roots (RNRs) of the cauda equina were evaluated in patients with lumbar stenosis. The stenotic segment cross-sectional area (CSA) cut-off value that could lead to RNRs of the cauda equina was detected as 55.22 mm2. In patients with RNRs of the cauda equina, the average CSA was significantly lower than in patients who did not have RNRs. Disc herniation type and spondylolisthesis were not significantly associated with the relative length or CSA of the dural sac. It was found that the incidence of RNRs observed at the superior of the stenosis level increased as the CSA decreased.