Abstract:

To remove the pain and joint movement restrictions that occur in knee osteoartritis, knee joint proteins made of metal and polyethylene materials are used. In these protheses, the patient is faced with problems such as exhaustion, relaxation, imbalance and infection, depending on causes such as age, activity level, weight and additional diseases. Depending on these problems, the lifetime of the proteins is also changing. Intensive work on protez designs is ongoing to solve these problems seen in the protezes. One of these is the joint total knee prothesis designed to perform the task of the back cross bond.      Despite the design of the post-cam in the Bağkesen protheses according to different geometric shapes, the work on making the ideal design continues. In this study, the effects of three different geometric contact areas, the straight-right, the convex-convex and the convex-convex in the post-cam, on the von misses and the contact pressure, were studied by the analysis of the final elements and the effects on the stretching. The study found that the increase in the contact surface area reduced the von misses stretching and contact pressure and consequently the amount of stretching decreased. According to the results of the analysis, it was also measured that the stretching was the lowest in conkav-conveks contact-based designs.

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