Analysis of Hip Prostheses Materials Properties

Abstract

AbstractThe most frequent reason for replacing a hip prosthesis is the aseptic loss of an implant component, with or without osteolysis. As around 93% of the arthroplasties (e.g., in Sweden) are cemented and it can be concluded that aseptic mobilization is the most frequent cause of damaging in cemented implants. Aseptic mobilizations often indicate poor shear resistance or a faulty interface between the cement and the components or catastrophic wear as a result of high debris production (from cement, metal, or polyethylene), which together with the hydraulic effects of the joint lead to osteolysis. As a follow up, the end users (medical staff and patients) need to be sure that the bone cements are fit for purpose. Considering the abovementioned issues, the paper concerns the analysis of cement and hip implant component behavior for the most used materials in hip arthroplasties in order to provide end users with a reliable tool in materials testing.