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. 2017 Sep 26;5(9):2325967117728675. doi: 10.1177/2325967117728675

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© The Author(s) 2017

This article is distributed under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 License (http://www.creativecommons.org/licenses/by-nc-nd/4.0/) which permits non-commercial use, reproduction and distribution of the work as published without adaptation or alteration, without further permission provided the original work is attributed as specified on the SAGE and Open Access pages (https://us.sagepub.com/en-us/nam/open-access-at-sage).

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Figure 2. — Comparison of the surface-fit and midpoint methods for measuring the joint space width (JSW) in the medial compartment. The surface-fit method JSW values for each participant and each knee (left: open circles; right: open diamonds) are plotted vs measurements obtained using the (A) midpoint method. The (B) Bland-Altman plot displays the differences between the methods (surface-fit and midpoint) vs mean JSW for the 2 methods. The solid line represents the mean difference, and the dashed lines represent the 95% limits of agreement.