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. 2023 Feb 9;14(6):1760–1770. doi: 10.1177/21925682231155846

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© The Author(s) 2023

This article is distributed under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 License (https://creativecommons.org/licenses/by-nc-nd/4.0/) which permits non-commercial use, reproduction and distribution of the work as published without adaptation or alteration, without further permission provided the original work is attributed as specified on the SAGE and Open Access pages (https://us.sagepub.com/en-us/nam/open-access-at-sage).

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Figure 5. — In one case (serial number 27, full-endoscopic laminotomy [FEL] group), spondylolisthesis was present before surgery, but slight improvement in spondylolisthesis is observed on serial follow-up images after surgery. (From the left, preoperative, postoperative, 3 months, 17 months later. In a separate, visual analogue scale [VAS] back, leg, and Oswestry Disability Index [ODI] improved from 2, 8, 52 to 3, 3, 14, respectively at the last follow-up).