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. 2020 Aug 30;12(2):267–277. doi: 10.1177/2192568220950332

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© The Author(s) 2020

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 2. — Patient 2: Preoperative lateral radiograph demonstrating grade I degenerative spondylolisthesis (A) and postoperative radiograph following L5-S1 ALIF using PEEK cage with integrated fixation, and PSF (B). Postoperative day 53 CT scan demonstrating S1 insufficiency fracture (C) and postoperative radiograph 6 months after revision L4-pelvis fusion (D).