@inproceedings{2b8caa93ddd1407cae53c48fa9b7141b,
title = "Mechanical properties of individual trabeculae in a physiological environment",
abstract = "Reliable mechanical properties of trabecuale are needed at the tissue-level for prediction of mechanical behavior of the overall trabecular structure using Finite element analysis (FEA). The aim of this study was to develop a set-up to test trabeculae in tension in a close to physiological environment, and to determine reliable tissue-level properties. Ten bovine trabeculae were tested until failure. Tissue-stress can only be indirectly determined, since it is based on a defined cross-sectional area. Different geometrical assumptions for the cross-section were compared. The mean tissue Youngs modulus, based on the assumption of an elliptical cross-sectional area, was 9.9 ± 3.4GPa, the mean tissue ultimate tissue strain 9.8 ± 3.9%. Back-calculation of the tissue Youngs modulus by means of FEA illustrated a significant reduction to 8.2 ± 2.4GPa (p < 0.001). However, with simple geometric assumptions, it is possible to estimate a reasonable upper and lower boundary for the tissue Young's modulus. Full-field strain measurements were done to detect localization of strain. It was shown that local strain peaks occur already early after yielding, with a local strain at fracture of 19.7 ± 6.6%. These findings clearly show that individual trabeculae can withstand much higher tissue strains as previously reported.",
keywords = "bone fracture risk assessment, hydration, local strain, post-yield behaviour, structural influence, tensile test",
author = "Martin Frank and Dorothee Marx and Pahr, {Dieter H.} and Thurner, {Philipp J.}",
note = "Publisher Copyright: {\textcopyright} 2017 International Association of Science and Technology for Development - IASTED.; 13th IASTED International Conference on Biomedical Engineering, BioMed 2017 ; Conference date: 20-02-2017 Through 21-02-2017",
year = "2017",
month = apr,
day = "5",
doi = "10.2316/P.2017.852-023",
language = "English",
series = "Proceedings of the 13th IASTED International Conference on Biomedical Engineering, BioMed 2017",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
pages = "141--146",
editor = "Rita Kiss and Thurner, {Philipp J.}",
booktitle = "Proceedings of the 13th IASTED International Conference on Biomedical Engineering, BioMed 2017",
address = "United States",
}