Biomechanical in silico evaluation of a 3D novel total hip implant with cemented fixation using finite elements

This paper presents the biomechanical evaluation of a proposed replacement implant for a total hip arthroplasty considering both the effect of the material and using a numerical tool. The use of titanium, alumina, polycarbonate urethane (PCU), and nitride titanium allows the manufacture of a cemented hip prosthesis with better resistance to corrosion, greater biocompatibility, greater mechanical resistance for physiological conditions, and does not present plastic deformation. This article provides an analysis of biomaterials and adequate geometries for a total hip prosthesis, with the aim of finding the optimal model, thus avoiding complications such as loosening or fatigue that current models present. Ultimately, the proposed design of the prosthesis was modeled using finite elements, simulating the static loads to which the prosthesis is subjected and evaluating the chosen biomaterials. Clinical Relevance - Osteoarthritis is a degenerative disease that affects 20% of the population above 60 years of age, particularly the hip joint, which is why, in most cases, a total arthroplasty of the expressed joint is required. In this procedure, the hip is replaced with an implant, which failure is usually related with either geometrical conditions or selected materials. An exponential increase of 136% in the incidence of total hip arthroplasty is expected by 2030.