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. 2019 Nov 26;7(11):2325967119882663. doi: 10.1177/2325967119882663

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© The Author(s) 2019

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 3. — Measurement of the femoral bone tunnel diameter at the aperture. On the sagittal image (SI), the bone tunnel circular plane is perpendicular to the long axis of the femoral tunnel. The bone tunnel diameter was calculated using the following equation: (D1 + D2 + D3 + D4) / 4; where D = distance. On the axial image (AI), the purple line is the long axis of the femoral tunnel, and the blue line is perpendicular to the long axis of the femoral tunnel. On the coronal image (CI), the yellow line is the long axis of the femoral tunnel, and the blue line is perpendicular to the long axis of the femoral tunnel.