EXPERIMENTAL VALIDATION OF A COMPUTATIONAL KNEE MODEL OF TKR IMPLANT PLACEMENT

Aaron Henry, G. Goodchild, Jonathan B Greenwald, M. Meftah, Michael Moreno, Andrew B. Robbins
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Abstract

The goal of this work was to experimentally validate a computational model for TKRs to improve implant alignment accuracy and assess potential implant misalignment during preoperative planning. Initial validation of the model was achieved by comparing ligament strain energies between the computational model and a physical knee model comprised of bone and ligament analogues. Experimental validation would be considered met when the computational model strain energies were within 10% of the measured values for all six physical knees. Physical and computational knee models were created with six variations of implant alignment to test the robustness of the computational model. Strain energy errors were well within the 10% threshold across knee range of motion.
TKR假体置入计算膝关节模型的实验验证
这项工作的目的是通过实验验证tkr的计算模型,以提高种植体对准精度,并在术前计划中评估潜在的种植体错位。通过比较计算模型和由骨和韧带类似物组成的物理膝关节模型之间的韧带应变能,实现了模型的初步验证。当计算模型应变能在所有六个物理膝关节的实测值的10%以内时,认为满足实验验证。用六种不同的假体对齐方式创建物理和计算膝关节模型,以测试计算模型的稳健性。应变能误差在整个膝关节运动范围内的10%阈值内。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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