Anisotropy of the fatigue behaviour of cancellous bone

  • The fatigue behaviour of materials is of particular interest for the failure prediction of materials and structures exposed to cyclic loading. For trabecular bone structures only a few sets of lifetime data have been reported in the literature and structural measures are commonly not considered. The influence of load contributions which are not aligned with the main physiological axis remains unclear. Furthermore site and species dependent relationships are not well described. In this study five different groups of trabecular bone, defined in terms of orientation, species and site were exposed to cyclic compression. In total, 108 fatigue tests were analysed. The lifetimes were found to decrease drastically when off-axis loads were applied. Additionally, species and site strongly affect fatigue lifetimes. Strains at failure were also found to be a function of orientation.

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Author:Sebastian DendorferORCiD, Hans Jürgen Maier, David Taylor, Joachim Hammer
Parent Title (English):Journal of Biomechanics
Document Type:Article
Year of first Publication:2008
Release Date:2020/05/12
GND Keyword:Ermüdung; Knochen; Spongiosa; Anisotropie
First Page:636
Last Page:641
Konferenzangabe:Deutscher Kongress für Biomechanik, 07. bis 09. März 2007 in Köln; 5. Jahrestagung der Deutschen Gesellschaft für Biomechanik (DGfB) und Jahrestagung der Sektion Biomechanik der Deutschen Vereinigung für Sportwissenschaft (dvs)
Institutes:Fakultät Maschinenbau
Fakultät Maschinenbau / Labor Werkstoffprüfung und Metallographie
Fakultät Maschinenbau / Labor Biomechanik (LBM)
Publication:Externe Publikationen
research focus:Lebenswissenschaften und Ethik