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Finite Element Modelling of Bioactive Contact in Bone‐Implant Interface
Author(s) -
Lutz André,
Nackenhorst Udo
Publication year - 2008
Publication title -
pamm
Language(s) - English
Resource type - Journals
ISSN - 1617-7061
DOI - 10.1002/pamm.200810185
Subject(s) - finite element method , implant , materials science , biomedical engineering , interface (matter) , computer science , element (criminal law) , mechanical engineering , composite material , contact angle , structural engineering , engineering , medicine , surgery , sessile drop technique , political science , law
Abstract Finite element simulation for the prediction of bone remodelling caused by implants is a powerful method to improve or to rate implant designs even before they will be evaluated in clinical studies. But the bone–implant interaction is often modelled as ideal bonding in the interface. This approach is not suitable to describe the interrelation of both parts in a physiological manner. To correct these insufficiencies a 3D bioactive contact element has been developed. This contact element describes on the one hand the pure mechanical interaction and on the other hand the mechanical stimulated bone ingrowth in porous surfaces. The benefits of the use of the bioactive contact element regarding the standard method will be presented in this contribution. A comparison of both methods based on clinic results regarding a hip prosthesis with mixed surface textures will be shown. (© 2008 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)