PMID: 15341177Sep 3, 2004Paper

Geometric determinants to cement line debonding and osteonal lamellae failure in osteon pushout tests

Journal of Biomechanical Engineering
X Neil Dong, X Edward Guo

Abstract

Cement lines are the boundaries between secondary osteons and the surrounding interstitial bone matrix in cortical bone. The interfacial properties of cement lines have been determined by osteon pushout tests. However, distinctively different material properties were obtained when osteon pushout tests were performed under different test geometries. In the present study, an axisymmetric two-dimensional finite element model was used to simulate an osteon pushout test using the test geometry of actual experiments. The results indicated that shear failure within the osteonal lamellae would occur when the osteon pushout test was performed under the condition of a thick specimen and large supporting hole. On the other hand, cement line debonding occurred when the osteon pushout test was performed using a thin specimen and small supporting hole. The finite element results were consistent with previous experiments of osteon pushout tests under different test geometries. Furthermore, the finite-element results suggest that a smoothly curved punch would most likely cause debonding at the cement line instead of osteonal lamellae.

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Citations

Jun 15, 2007·Computer Methods in Biomechanics and Biomedical Engineering·L P MullinsP E McHugh
Feb 26, 2008·Computer Methods in Biomechanics and Biomedical Engineering·M Predoi-Racila, J M Crolet
Jul 23, 2005·The Anatomical Record. Part A, Discoveries in Molecular, Cellular, and Evolutionary Biology·John G SkedrosRoy D Bloebaum
Jul 31, 2013·International Journal for Numerical Methods in Biomedical Engineering·Ted J VaughanLaoise M McNamara
Oct 26, 2018·The Anatomical Record : Advances in Integrative Anatomy and Evolutionary Biology·Amy C BeresheimAmanda Alblas

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