A computational wear simulator is an efficient tool for evaluating the wear of artificial knee joints. The classical Archard’s wear law-based simulator has questionable accuracy and is focused on walking. In this study, an in silico polyethylene wear simulation of total knee replacements was developed considering the various highly demanding daily activities. A good predicted accuracy (error = 8.1%) was found through comparison of the experimental results. A relatively larger averaged wear loss was found under the loading condition (1.53 mg/mc) of daily activities compared with the walking condition (1.32 mg/mc). The squatting movement (2.57 mg/mc) produces the highest overall wear rate. In addition, a relatively larger amount of wear was found on the medial side knee prosthesis than that on the lateral side. The enhanced in silico polyethylene wear simulator provides an accurate and comprehensive tool for wear prediction in preclinical wear testing.

计算磨损模拟器是评估人工膝关节磨损的有效工具。经典的 Archard 基于磨损定律的模拟器具有可疑的准确性，并且专注于步行。在这项研究中，考虑到各种高要求的日常活动，开发了全膝关节置换术的硅胶聚乙烯磨损模拟。通过比较实验结果，发现了良好的预测精度（误差 = 8.1%）。与步行条件 (1.32 mg/mc) 相比，在日常活动的负荷条件 (1.53 mg/mc) 下发现相对较大的平均磨损损失。下蹲运动 (2.57 mg/mc) 产生最高的整体磨损率。此外，与外侧相比，内侧膝关节假体的磨损量相对较大。