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. 2018 Jul 11;13:173. doi: 10.1186/s13018-018-0883-1

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© The Author(s). 2018

Open Access This 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. 1 — Longitudinal changes of the D-dimer levels after TKA. The D-dimer levels reached a peak value at 4 h after the surgery and decreased gradually on POD1 and POD4 in both DVT (+) and DVT (−) groups. The D-dimer levels were significantly higher in patients with DVT than in patients without DVT on POD4