The Effect of a Stiff Foot Plate On Walking Gait Mechanics.
The Effect of a Stiff Foot Plate On Walking Gait Mechanics.
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僵硬的脚踏板对步行步态力学的影响。
DOI：
10.1115/1.4046882
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发表时间：
2020
期刊：
影响因子：
--
通讯作者：
Anne E. Martin
中科院分区：
文献类型：
--
作者：
Dave Schmitthenner;C. Sweeny;Jing Du;Anne E. Martin
外骨骼越来越多地被用于治疗步态病理。许多这样的外骨骼使用脚板来驱动脚，改变了脚的有效僵硬。生物足和脚踝的僵硬在腿部的能量调节功能中起着重要的作用，因此研究脚板本身是如何影响步态的很重要。因此，这项研究量化了脚板本身如何改变16名健康年轻人的行走步态。足板长度的影响也通过使用两个脚板来检验，一个结束于跖骨，另一个延伸到脚趾，大约长20%。检查的步态参数包括步行速度、步频、髋关节、膝盖、脚踝、前脚和脚趾的关节角度、地面反作用力(GRF)和足踝力量。最显著的变化是由全钢板造成的，在推开时，踝关节活动范围(ROM)平均减少了13%，向前GRF减少了23%。较短的钢板也减少了踝关节的活动度。这表明脚板的存在影响了脚和脚踝的运动学。然而，测试脚板的存在对行走速度或髋关节或膝盖运动学没有影响。这表明，受试者大多能够通过他们的脚和脚踝在运动学和能量上补偿由于测试脚板而增加的脚僵硬。
Exoskeletons are increasingly being used to treat gait pathologies. Many of these exoskeletons use a foot plate to actuate the foot, altering the effective stiffness of the foot. Stiffness of the biological foot and ankle play an important role in the energy modulating function of the leg, so it is important to examine how a foot plate in and of itself impacts gait. Therefore, this study quantified how foot plates themselves alter the walking gait of 16 healthy young adults. The effect of foot plate length was also examined through the use of two foot plates, one that ended at the metatarsals and one that extended past the toes, about 20% longer. Gait parameters examined included walking speed, step frequency, joint angles for the hip, knee, ankle, forefoot, and toe, ground reaction forces (GRF), and foot-ankle power. The most significant changes were caused by the full plate, which caused an average 13% decrease in ankle range of motion (ROM) and a 23% decrease in forward GRF at push off. The shorter plate also decreased ankle ROM to a lesser degree. This indicates that the presence of a foot plate impacted foot and ankle kinematics. However, the presence of the tested foot plate had no effect on walking speed or hip or knee kinematics. This indicates that subjects were mostly able to compensate both kinematically and energetically via their foot and ankle for the increased foot stiffness due to the tested foot plate.
影响因子：
2.4
作者：
Kao, Pei-Chun;Lewis, Cara L.;Ferris, Daniel P.
通讯作者：
Ferris, Daniel P.