Advertisement

Computational Modelling of the Shape Deviations of the Sphere Surfaces of Ceramic Heads of Hip Joint Replacement

  • V. Fuis
  • Koukal
  • Z. Florian
  • P. Janicek
Conference paper
  • 132 Downloads
Part of the IFMBE Proceedings book series (IFMBE, volume 41)

Abstract

The problem of the damage of the bioimplants is very important today. In the endoprosthesis surgery there is a large percentage of implant defects, which cause the failure of the whole prosthesis. One kind of the total hip replacement functionality loss is acetabular cup pull-off from pelvis bone. This paper is aimed at manufacture perturbations (shape deviations) analysis as one of the possible reasons to this kind of failure. Dimension and of geometry manufacturing perturbations (roundness) were analyzed in detail. It was found, that these perturbations affect considered values of contact pressure and frictional moment. Contact pressure and frictional moment are quantities affecting replacement success and durability.

Keywords

Total hip replacement shape deviations roundness contact pressure frictional moment 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

Copyright information

© Springer International Publishing Switzerland 2014

Authors and Affiliations

  • V. Fuis
    • 1
  • Koukal
    • 2
  • Z. Florian
    • 2
  • P. Janicek
    • 1
  1. 1.Centre of Mechatronics – Institute of Thermomechanics AS CR and Institute of Solid Mechanics, Mechatronics and Biomechanics, Faculty of Mechanical EngineeringBrno University of TechnologyBrnoCzech Republic
  2. 2.Institute of Solid Mechanics, Mechatronics and Biomechanics, Faculty of Mechanical EngineeringBrno University of TechnologyBrnoCzech Republic

Personalised recommendations