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. 2017 Feb 13;5(2):2325967116688664. doi: 10.1177/2325967116688664

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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 1. — Midsagittal image defined by the presence of the posterior cruciate ligament (PCL) attachment, the intercondylar eminence, and concave anterior and posterior tibial cortex. The tibial longitudinal axis was found by drawing 2 overlapping circles: 1 proximal and 1 distal.