Laboratory for Movement Biomechanics, Institute for Biomechanics, ETH Zürich, Zurich, Switzerland.
Laboratory for Mechanical Systems Engineering, Empa, Dübendorf, Switzerland.
Comput Methods Biomech Biomed Engin. 2024 May;27(7):860-866. doi: 10.1080/10255842.2023.2206934. Epub 2023 May 1.
Despite availability of knee loads and kinematics data, conventional load- and displacement-controlled configurations still can't accurately predict tibiofemoral loads from kinematics or vice versa. We propose a combined load- and displacement-control method for joint-level simulations of the knee to reliably reproduce contact mechanics. Prediction errors of the new approach were compared to those of conventional purely load- or displacement-controlled models using implant loads and kinematics for multiple subjects and activities (CAMS-Knee dataset). Our method reproduced both loads and kinematics more closely than conventional models and thus demonstrates clear advantages for investigating tibiofemoral contact or wear.
尽管有膝关节负荷和运动学数据可用，但传统的负荷和位移控制配置仍然不能准确地从运动学预测胫股负荷，反之亦然。我们提出了一种联合负荷和位移控制方法，用于膝关节的关节水平模拟，以可靠地再现接触力学。使用多个受试者和活动的植入物负荷和运动学（CAMS-Knee 数据集），比较了新方法与传统的纯负荷或位移控制模型的预测误差。我们的方法比传统模型更紧密地再现了负荷和运动学，因此在研究胫股接触或磨损方面具有明显的优势。
