Not only stiffness, but also yield strength of the trabecular structure determined by non-linear µFE is best predicted by bone volume fraction and fabric tensor

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• 作者：Sarah N. Musy^a ; ¹ ; Ghislain Maquer^a ; ¹ ; ^{ghislain.maquer@istb.unibe.ch} ; Jarunan Panyasantisuk^a ; Jasmin Wandel^b ; Philippe K. Zysset^a
• 关键词：Nonlinear µ ; FE ; Yield properties ; Trabecular structure ; Fabric tensor ; Trabecular bone score ; Individual trabeculae segmentation
• 刊名：Journal of the Mechanical Behavior of Biomedical Materials
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：65
• 期：Complete
• 页码：808-813
• 全文大小：501 K
• 卷排序：65

文摘

The morphology of 126 trabecular samples is evaluated on µCT scans via 25 indices. Their elastic and yield properties are computed for 9 load cases by nonlinear µFEA. 98% of the variance of the elastic and yield properties is explained by BV/TV and fabric tensor. Accounting for other morphological indices does not improve this predictive value. The fabric tensor explains more the variance of the yield strength (23%) than the variance of the stiffness (9%).