Minimizing Risk of Failure from Ceramic-on-Ceramic Total Hip Prosthesis by Selecting Ceramic Materials Based on Tresca Stress

The choice of ceramic-on-ceramic coupling in total hip prosthesis has advantages over couplings with other combinations materials that use polyethylene and metal terms high hardness, scratch resistance, low wear rate, increased lubrication performance. To reduce the risk primary postoperative failure, selection ceramic for is a strategic step needs to be taken. current study aims analyze commonly used materials, namely zirconium dioxide (ZrO2), silicon nitride (Si3N4), aluminium oxide (Al2O3), according Tressa failure criterion investigation stress distribution. A two-dimensional axisymmetric finite element-based computational model been evaluate Tresca on under gait cycle. results show ZrO2-on-ZrO2 can by about 17.34% 27.23% Si3N4-on-Si3N4 Al2O3-on-Al2O3 couplings, respectively.