Analysis of the Applied Load of a Knee Tumor Prosthesis in Critical Point Condition of 15⁰ in the Walking Cycle
DOI:
https://doi.org/10.46842/ipn.cien.v25n2a09Keywords:
finite element analysis, contact pressure, knee prosthesis, walking cycle and Hertz contactAbstract
The present investigation was carried out at the request of the company CME ortopedia de Mexico to investigate the design and vulnerability of the manufacture of a knee tumor prosthesis made of ultra-high molecular weight polyethylene (UHMWPE) type GUR 1020 and titanium alloy Eli grade 23 (Ti6AL4V), was taken as an activity the walk cycle for analysis of the applied load. Using finite element software, von Mises stresses and contact pressures (CPRESS) were analyzed. Simulations were performed in critical point condition of the walking cycle in the conditions of 15⁰ and with an average patient weight of 70 kg, specific data provided by the company. A two-dimensional static simulation of the bushing-bolt assembly and a three-dimensional simulation of the assembly with the prosthesis components were performed. The results obtained predict a possible failure of the prosthesis based on the analysis of the stress distribution and the contact stress of the UHMWPE.
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