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. 2022 Oct 28;9:108. doi: 10.1186/s40634-022-00546-z

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© The Author(s) 2022

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/.

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Fig. 1 — a The mechanical axis of the leg is the angle formed between the mechanical axis of the femur and tibia. b Radiologic measurement of femoral and tibial implants. α: coronal inclination of the femoral component with the mechanical axis of the femur, β: coronal inclination of the tibial component with the mechanical axis of the tibia, δ: sagittal inclination of the tibial component with the mechanical axis of the tibia