PDF(Pubmed)
Abstract：
This study aimed to compare the ground reaction forces (GRFs) and spatio-temporal parameters as well as their asymmetry ratios in gait between individuals wearing a transfemoral prosthetic simulator (TFSim) and individuals with unilateral transfemoral amputation (TFAmp) across a range of walking speeds (2.0-5.5 km h-1). The study recruited 10 non-disabled individuals using TFSim and 10 individuals with unilateral TFAmp using a transfemoral prosthesis. Data were collected using an instrumented treadmill with built-in force plates, and subsequently, the GRFs and spatio-temporal parameters, as well as their asymmetry ratios, were analysed. When comparing the TFSim and TFAmp groups, no significant differences were found among the gait parameters and asymmetry ratios of all tested metrics except the vertical GRFs. The TFSim may not realistically reproduce the vertical GRFs during the weight acceptance and push-off phases. The structural and functional variations in prosthetic limbs and components between the TFSim and TFAmp groups may be primary contributors to the difference in the vertical GRFs. These results suggest that TFSim might be able to emulate the gait of individuals with TFAmp regarding the majority of spatio-temporal and GRF parameters. However, the vertical GRFs of TFSim should be interpreted with caution.
摘要：
这项研究旨在比较穿着经股假体模拟器（TFSim）的个体与单侧经股截肢（TFAmp）的个体之间的地面反作用力（GRFs）和时空参数及其步态不对称率。步行速度（2.0-5.5kmh-1）。该研究招募了10名使用TFSim的非残疾个体和10名使用经股假体的单侧TFAmp个体。数据是使用带有内置测力板的仪器跑步机收集的，随后,GRF和时空参数，以及它们的不对称比率，进行了分析。比较TFSim和TFAmp组时，除垂直GRF外,所有测试指标的步态参数和不对称率无显著差异.TFSim在重量接受和推出阶段可能无法真实地再现垂直GRF。TFSim和TFAmp组之间的假肢和组件的结构和功能差异可能是垂直GRF差异的主要原因。这些结果表明，TFSim可能能够在大多数时空和GRF参数方面模仿具有TFAmp的个体的步态。然而,TFSim的垂直GRF应谨慎解释。
