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. 2020 Sep 3;10:14523. doi: 10.1038/s41598-020-71316-z

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© The Author(s) 2020

Open Access This 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/.

PMC Copyright notice

The determination of the biomechanical parameters in this study is shown representatively on a medial calcaneal periosteum (MCP) sample of this study. The elastic modulus (E_mod) was determined by a linear regression analysis between the zero-point and the point that equals 70% of the maximum stress. The ultimate tensile strength (UTS) equals the maximum stress (F_max) divided by the cross section value before the tissue failed when being stretched. The strain at maximum force (SF_max) reflects how much the sample was strained at the point of the UTS compared to its initial length.