An open source lower limb model: Hip joint validation.

摘要: Musculoskeletal lower limb models have been shown to be able predict hip contact forces (HCFs) that are comparable in vivo measurements obtained from instrumented prostheses. However, the muscle recruitment predicted by these does not necessarily compare well measured electromyographic (EMG) signals. In order verify if it is possible accurately estimate HCFs force patterns consistent with EMG measurements, a model based on published anatomical dataset (Klein Horsman et al., 2007. Clinical Biomechanics. 22, 239-247) has implemented open source software OpenSim. A cycle-to-cycle joint validation was conducted against recorded during gait and stair climbing trials of four arthroplasty patients (Bergmann 2001. Journal 34, 859-871). Hip tensions were estimated minimizing polynomial function forces. The resulting activation assessing multiple powers objective compared profiles literature. Calculated denoted tendency monotonically increase their magnitude when raising power function; best estimation experimental found quadratic minimized (average overestimation at peak frame: 10.1% for walking, 7.8% climbing). can produce appropriate balanced sets used range applications requiring accurate quantification both. developed available website https://simtk.org/home/low_limb_london.