Review of Wear Model Optimization for Ceramic and Metal Total Hip Arthroplasty with Medical Physics Applications

Abstract

In a series of previous contributions, two types of bioengineering studies of total hip arthroplasty (THA) modelling optimization were presented. Namely, computational modelling THA in vitro wear modelling parameter optimization for ceramic-on-ceramic (CoC), and metal-on-metal THA (MoM) one. The objective of the research was to obtain the optimal-principal model parameters for in vitro tribological predictions. These optimal are an adimesional K constant parameter, hardness, and hip-biomechanical load over the THA implant. In those contributions, the aim was carry out both dual and multi objective optimization. In ceramic, dual optimization was presented for Alumina (Al3O2), and Zirconium (ZrO2) CoC, and secondly a multi objective one for Alumina, Zirconium, ZTA Biolox, and ZTA Biolox-Delta. In metal, dual optimization was obtained for Titanium and Co-Cr-Mo materials. This article presents a review of those most important results in Numerical, 2D Graphical, and 3D Interior Optimization. Applications obtained are useful/efficacious for in vitro tribology predictions in the area of clinical medical physics and bioengineering—with the new 4D Interior Optimization included. A second innovation related to the reviewed papers group is the GNU-Octave software design/comparison with Matlab for 4D Interior Optimization graphics. Most important of these usages in ceramic and metal are an adimensional K for wear modelling, and a optimal model parameter group for THA erosion/durability tribopredictions. Clinical orthopedics, bioengineering, and medical physics applications emerge from all the results.