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. 2021 Feb 10;16:125. doi: 10.1186/s13018-021-02279-8

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© The Author(s) 2021

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 — Case 19. A 38-year-old man with noninfected nonunion of the femur. a X-ray image at the time of admission to our hospital. b CT images from the same period. A relatively large bone gap was found around the nonunion site. c Quantitative evaluation by the GI-BONE software. The third bone fragment shows low uptake (white arrow). MIP, maximum intensity projection. d X-ray image immediately after nonunion surgery with augmentative plating, nail exchange, and autologous bone grafting. e X-ray image 6 months postoperatively showing that bone union was achieved. All implants were removed