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. 2013 May 8;2:213. doi: 10.1186/2193-1801-2-213

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© Muhle et al.; licensee Springer. 2013

This article is published under license to BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Normal ACL images obtained at knee extension (A), 30° of knee flexion (B) and 55° of knee flexion (C) on T2-weighted TSE FS sagittal image (2900/90). At extension (A) the ACL fibers are seen as linear, striate fibers extending from the roff of the femoral notch to the tibial surface. At 30° and 55° of flexion (B, C) a lengthening with astraing-like appearance of the ACL is seen. The posterior ACL, changes its appearance from an angular-konvex contour at extension (A), to a more straight like appearance with increased flexion angles (B, C).