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. 2022 Mar 24;17:178. doi: 10.1186/s13018-022-03070-z

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© The Author(s) 2022

Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated in a credit line to the data.

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Fig. 1 — A 57-year-old male patient with postoperative surgical site infection. a, b Lumbar MRI showed preoperative disk herniation and spinal canal stenosis. c, d Lumbar postoperative X ray showed satisfactory position of screw and cage. e, f On the 4th day after surgery, T2WI sagittal plane and cross-sectional plane showed mixed high and equal signals and g T1WI showed a low signal in the deep incision. h serum C-reactive protein (CRP) level and erythrocyte sedimentation rate increase sharply from postoperative day 3. The SSI was confirmed by his complaint of localized pain, symptoms of fever, imaging test and laboratory