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. 2016 May 18;17:215. doi: 10.1186/s12891-016-1076-x

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© Ihle et al. 2016

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 — Norm-based scoring of the physical component summary score (PCS) and the mental component summary score (MCS) of health-related quality of life (SF-36) [mean values included in the bars; SD is illustrated in Table 2] compared to the mean value of the German normal population (NP) – indicated by the dotted line (M = 50). A significant clinical approximation of MCS in all postoperative results comparable to the German normal population was found