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. 2015 Dec 18;17:366. doi: 10.1186/s13075-015-0806-z

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© Foley 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 — Strengthening the reporting of observational studies in epidemiology (STROBE) diagram of included participants and hips for each progression outcome. THR total hip replacement, KL Kellgren–Lawrence, rOA radiographic osteoarthritis, ROM range of motion