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The paper presents analysis of stress distribution in the friction node of knee joint endoprosthesis where sleds are made of various titanium and CoCrMo alloys and cooperate with flat polyethylene inserts. Currently used titanium alloys consist of Nb, Ta, Zr or Mo and with lesser value of Young’s modulus than Ti6Al4V alloy, or steel CoCrMo, which significantly varies from other metal materials. The analysis was conducted with numerical method of ADINA System 8.6. The Finite Elements Method makes it possible to compute and present stress distribution quickly in all elements of the model.

Numerical analysis of stress distribution generated in polyethylene inserts by knee joint endoprotheses' sleds made of different titanium alloys