Maharaj Jayishni N, Rainbow Michael J, Cresswell Andrew G, Kessler Sarah, Konow Nicolai, Gehring Dominic, Lichtwark Glen A
Griffith Centre of Biomedical and Rehabilitation Engineering, Gold Coast, Australia.
Department of Mechanical and Materials Engineering, Queen's University, Kingston, Canada.
Comput Methods Biomech Biomed Engin. 2022 Apr;25(5):554-565. doi: 10.1080/10255842.2021.1968844. Epub 2021 Oct 26.
We developed and validated a multi-segment foot and ankle model for human walking and running. The model has 6-segments, and 7 degrees of freedom; motion between foot segments were constrained with a single oblique axis to enable triplanar motion [Joint Constrained (JC) model]. The accuracy of the JC model and that of a conventional model using a 6 degrees of freedom approach were assessed by comparison to segment motion determined with biplanar videoradiography. Compared to the 6-DoF model, our JC model demonstrated significantly smaller RMS differences [JC: 2.19° (1.43-2.73); 6-DoF: 3.25° (1.37-5.89)] across walking and running. The JC model is thus capable of more accurate musculoskeletal analyses and is also well suited for predictive simulations.
我们开发并验证了一种用于人类行走和跑步的多节段足踝模型。该模型有6个节段和7个自由度；足部节段之间的运动通过单个斜轴进行约束，以实现三平面运动[关节约束（JC）模型]。通过与双平面视频X射线摄影确定的节段运动进行比较，评估了JC模型和使用6自由度方法的传统模型的准确性。与6自由度模型相比，我们的JC模型在行走和跑步过程中表现出显著更小的均方根差异[JC：2.19°（1.43 - 2.73）；6自由度：3.25°（1.37 - 5.89）]。因此，JC模型能够进行更准确的肌肉骨骼分析，也非常适合预测模拟。
