Dynamics of Hip Artificial Joints Wear

Abstract

In the present paper the authors try to evaluate, based on the results obtained from experimental and numerical previous studies, the wear evolution in the components of a Total Hip Prosthesis (THP), during the service period. Topographic investigations of polyethylene cup and femoral head surfaces, of a modular total hip prosthesis retrieved after a service period of 10 years, are made. The aim of the study was the determination of: state of surfaces (roughness, microhardness), surfaces wear type, localization and microscopic investigation of damages, wear mechanism identification.