Ehara Y, Beppu M, Nomura S, Kunimi Y, Takahashi S
Rehabilitation Engineering Department, Kanagawa Rehabilitation Center, Japan.
Arch Phys Med Rehabil. 1993 Jan;74(1):68-72.
The purpose of this study is to evaluate the energy storing and releasing property of 14 different prosthetic feet, in which so-called energy storing prosthetic feet are included. The prostheses were fitted to a young male amputee who walked on a level and slope walkway. Gait-analysis data were obtained by an automatic gait measurement system from which the ankle moment and ankle angular velocity were calculated. From these values, the power and the energy at the ankle joint were calculated. The prosthetic feet were ranked according to the total amount of energy, that is the sum of energy being stored and released. Both of the stored and released energy are important feature of the prosthetic feet. According to these evaluation criteria, we ranked the feet into three groups. The high total energy feet were Flex-Walk,a SAFE II,b and High Functionc. The medium total energy feet were SAFE,b Greissinger,d Seattle,e Copy II,f and Dynamic.d The low total energy feet were Seattle Light,e Fore Joint,g Quantum,h SACH,dSTEN,i and Uniaxial.d As for the subjective feeling, our subject preferred higher energy absorbing feet, in which a somewhat high level of energy was stored but low level of energy was released.
本研究的目的是评估14种不同假肢脚的能量储存和释放特性，其中包括所谓的能量储存型假肢脚。这些假肢安装在一名年轻男性截肢者身上，他在水平和斜坡人行道上行走。通过自动步态测量系统获取步态分析数据，并据此计算踝关节力矩和踝关节角速度。根据这些值，计算踝关节的功率和能量。假肢脚根据能量总量进行排名，即储存和释放的能量总和。储存和释放的能量都是假肢脚的重要特征。根据这些评估标准，我们将这些假肢脚分为三组。总能量高的假肢脚是Flex-Walk、SAFE II、b和High Functionc。总能量中等的假肢脚是SAFE、b Greissinger、d Seattle、e Copy II、f和Dynamic。d总能量低的假肢脚是Seattle Light、e Fore Joint、g Quantum、h SACH、d STEN、i和Uniaxial。d至于主观感受，我们的受试者更喜欢能量吸收较高的假肢脚，即储存的能量水平较高但释放的能量水平较低的假肢脚。
