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. 2017 Nov 24;28(5):1844–1853. doi: 10.1007/s00330-017-5140-1

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© The Author(s) 2017

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.

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Fig. 2 — radiographic joint space width. Fixed-flexion radiograph depicting the medial to lateral coordinate system used for fixed-location measurement (medfJSW: medial fixed joint space width at 22.5%), as well as the minimum medial joint space width (mJSW)