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. 2015 Nov 16;16:353. doi: 10.1186/s12891-015-0812-y

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© Ha et al. 2015

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 1 — A scatter plot of change of ROM between the preoperative and postoperative state. The portion above linear line means improvement of ROM from preoperative to postoperative state. The plot reveals that postoperative ROM is overall greater than preoperative ROM