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. 2017 Jan 23;18:35. doi: 10.1186/s12891-017-1413-8

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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. 2 — Preoperative imaging of the left ankle prior to the second surgery. (a, b) Preoperative radiographs show pathologic damage to the anterolateral talus, Approximately 1.0-cm-diameter higher-density nodules can be seen on the neck of the talus on the left side, with a clear boundary. (c, d) Preoperative computed tomography images show the characteristics of the osteoid osteoma nidus. (e, f) Preoperative sagittal T2-weighted and coronal T2-weighted magnetic resonance images show widespread bone marrow oedema of the talus with the osteoid osteoma lesion inside (white circle and black arrow indicate the nidus)