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. 2020 Oct 6;21:653. doi: 10.1186/s12891-020-03648-w

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© The Author(s) 2020

Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/. 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 in a credit line to the data.

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Fig. 2 — Femoral Head: Each open/black dot represents the total area or boundary length of the femoral heads for a male/female subject. The horizontal line indicates the mean of the control group and the patients with osteoarthritis, while the boxes represent the 95% confidence interval. Student’s t-test was used to test for statistical significance. Marginal- and Subarticular osteophytes: Each open/black dot represents the total area or boundary length of marginal- or subarticular osteophytes for a male/female subject. The horizontal line indicates the median of the control group and the patients with osteoarthritis, while the boxes represent the interquartile range. Mann–Whitney U test was used to test for statistical significance. P-value < 0.05 was considered significant