Zhibin Fang1This email address is being protected from spambots. You need JavaScript enabled to view it., Shaobin Zhang1, Jiamei Cheng2, and Shaoming Li2
1Department of Sports Work, Hebei Agricultural University, Hebei 071000, Hebei, China
2College of Science and Technology, Hebei Agricultural University, Huanghua 061100, Hebei, China
Received: February 4, 2024 Accepted: April 16, 2024 Publication Date: May 25, 2024
Copyright The Author(s). This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are cited.
In this study, we investigated the mechanical behavior of a knee replacement prosthesis (TKR) manufactured by the Zimmer company. To facilitate our analysis, we initially utilized a coordinate measuring device, specifically a contact 3D scanner, to prepare a cloud-of-point model of the prosthesis. This scanning process allowed us to accurately capture the geometry and dimensions of the TKR, providing a detailed representation of its physical structure. By utilizing this advanced scanning technology, we ensured that our subsequent simulations and analyses were based on precise and reliable data, enabling a thorough examination of the mechanical performance of the knee replacement prosthesis. ABAQUS software was then used to analyze the three dimensional model and nonlinear static analysis was performed on the model. This simulation examined the mechanical performance of the prosthesis for different weight ranges, and the distribution of stress, strain, and displacement within the prosthesis was analyzed. The results show that the maximum stress created in the investigated prosthesis increases from 16MPa to 64MPa per weight of 55 kg to 75 kg. Although, with a 26% increase in the weight of the individual using a knee prosthesis, the maximum stress created in the prosthesis increases by 76%. This type of prosthesis is suitable for the maximum weight category of 80 kg, as it has a reliability coefficient of 3. In light of these results, it is clear that weight categories must be taken into account when considering a particular prosthesis. Otherwise, the prosthesis may be destroyed due to the application of larger forces during various everyday situations and result in serious knee injuries.
Keywords: knee prosthesis, knee joint, finite element analysis, ABAQUS software, stress distribution
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