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. 2017 May 31;5(5):2325967117708307. doi: 10.1177/2325967117708307

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© The Author(s) 2017

This article is distributed under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs 3.0 License (http://www.creativecommons.org/licenses/by-nc-nd/3.0/) 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 4. — The acetabular retroversion index is calculated by dividing BC by AB then multiplying by 100.¹⁴ (A) Medial aspect of the anterior rim, (B) lateral edge of the acetabulum, and (C) crossover point.