Title:
Impact of Hip Arthroplasty Stiffness on the Biocompatibility

Authors:
Mohammed Zahid Saadoon, David I Adam, Zainab Zahid Saadoon, Reiadh Kamal Al-Kamali, Iraq

Abstract:

Background. Maintaining bone health after arthroplasty placement is of paramount importance. Different materials used in artificial joint manufacturing are available in the market. Some had remarkable success rates. Ceramics are a group of biomaterials that have to gain special attention as bearing surfaces. Many surgeons and biomechanics researchers attribute their successes to their tribologic features. These are indirect effects. Methods. We had used state of art tool, FEA and linear analysis, to explore another direct impact of these materials on bone remodelling. Strain energy density was used as an objective criterion to evaluate the better model. The Hip model was provided by the local hospital CT-scan database. The comparison was based on the distribution of the strain energy within the model. Results. Due to their high stiffness (high Young modulus) and their resistance to deformation (low poison ratio), they have a more important direct effect on the bone. Nevertheless, their implantation should be considered as part of the total stiffness. The pattern of the strain energy density is better when a judicious choice of ceramic is done. Conclusions. Biocompatibility is a design-dependent subject. Injodious material combination could result in poor performance of the arthroplasty which is reflected upon patient health and welfare. We concluded that in the careful application of ceramics survivability of the arthroplasty could be enhanced.

DOI: http://dx.doi.org/10.51505/ijmshr.2021.5206