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. 2017 Mar 17;12:45. doi: 10.1186/s13018-017-0546-7

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© The Author(s). 2017

Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. 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.

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Fig. 4 — The typical radiographic views of the ankle before and after distraction arthroplasty combined with arthroscopic microfracture. a, b Preoperative anteroposterior and lateral radiographic views of the ankle suggested post-traumatic ankle arthritis characterized by osteophyte formation and obliteration of the joint space. c, d At the final follow-up of 28 months postoperatively, anteroposterior and lateral radiographic views of the ankle demonstrated joint-space enlargement and absence of osteophyte