Long‐term stability and debonding of cementless implants

PAMM, vol. 21

Abstract

Abstract This work presents a three‐dimensional FE frictional contact formulation with NURBS‐enriched contact elements for the debonding of partially osseointegrated, cementless implants. The contact model is based on a modified Coulomb's friction law [1] that can model the tangential debonding of partially osseointegrated implants. Here, a smooth transition function between the two friction coefficients is used to model the decrease of friction due to debonding of the implant. The model is applied to simulate the debonding of a hip implant to determine the influence of partial osseointegration on the stability of the implant.

Authors 4

1. Katharina Immel Aachen Aachen Institute for Advanced Study in Computational Engineering Science (AICES)

   Centre National de la Recherche Scientifique · Université Paris-Est Créteil · Université Gustave Eiffel · Laboratoire Modélisation et Simulation Multi-Echelle · Aachen Institute for Advanced Study in Computational Engineering Science · RWTH Aachen University

   Affiliation as printed

   Aachen Institute for Advanced Study in Computational Engineering Science (AICES) RWTH Aachen University Templergraben 55 52056 Aachen Germany

   MSME CNRS UMR 8208 Université Paris-Est Créteil Université Gustave Eiffel 94010 Créteil France

   Aachen Institute for Advanced Study in Computational Engineering Science (AICES), RWTH Aachen University, Templergraben 55, 52056 Aachen, Germany

2. Vu‐Hieu Nguyen

   Centre National de la Recherche Scientifique · Université Paris-Est Créteil · Université Gustave Eiffel · Laboratoire Modélisation et Simulation Multi-Echelle

   Affiliation as printed

   Université Gustave Eiffel MSME 77454 Marne-la-Vallée France

   Université Paris-Est Créteil CNRS MSME 94010 Créteil France

3. Guillaume Haïat

   Centre National de la Recherche Scientifique · Université Paris-Est Créteil · Université Gustave Eiffel · Laboratoire Modélisation et Simulation Multi-Echelle

   Affiliation as printed

   MSME CNRS UMR 8208 Université Paris-Est Créteil Université Gustave Eiffel 94010 Créteil France

4. Roger A. Sauer corresponding Aachen Aachen Institute for Advanced Study in Computational Engineering Science (AICES)

   Gdańsk University of Technology · Aachen Institute for Advanced Study in Computational Engineering Science · RWTH Aachen University

   Affiliation as printed

   Aachen Institute for Advanced Study in Computational Engineering Science (AICES) RWTH Aachen University Templergraben 55 52056 Aachen Germany

   Faculty of Civil and Environmental Engineering Gdańsk University of Technology ul. Narutowicza 11/12 80-233 Gdańsk Poland

   Aachen Institute for Advanced Study in Computational Engineering Science (AICES), RWTH Aachen University, Templergraben 55, 52056 Aachen, Germany

   Roger A. Sauer