The effects of a controlled energy storage and return prototype prosthetic foot on transtibial amputee ambulation.
The effects of a controlled energy storage and return prototype prosthetic foot on transtibial amputee ambulation.
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DOI：
10.1016/j.humov.2011.08.005
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发表时间：
2012-08
影响因子：
2.1
通讯作者：
Czerniecki, Joseph M.
中科院分区：
文献类型：
--
作者：
Segal, Ava D.;Zelik, Karl E.;Klute, Glenn K.;Morgenroth, David C.;Hahn, Michael E.;Orendurff, Michael S.;Adamczyk, Peter G.;Collins, Steven H.;Kuo, Arthur D.;Czerniecki, Joseph M.
与非截肢者相比，截肢者缺乏功能性的踝关节肌肉结构导致假体踝关节推离减少，其他关节的代偿和更昂贵的步态。为了解决这些问题，已经开发了各种储能和返回假肢，但还没有足够的证据表明可以改善截肢者的生物力学和能量成本，这可能是因为能量返回的时间和大小没有得到控制。这项研究的目的是检验一个由微处理器控制的假肢原型是如何影响截肢者的步态的，该假肢设计的目的是在加载期间存储一些能量，并在推开时将其返回。单侧经胫骨截肢者按随机顺序佩戴受控能量储存和返回假足(CESR)、常规足(CONV)和预先规定的足(PRES)。当参与者以恒速行走时，收集三维步态分析和净耗氧量。与CONV和PRES相比，CESR足部在早期站立时表现出更多的能量储存，增加了假肢峰值推力和功，增加了假肢质心(COM)推出功，减少了完整肢体COM碰撞功。与COV和PRES相比，CESR的正COM功的生物学贡献较小。然而，CESR的净代谢成本与CONV相比没有变化，而与PRES相比有所增加，这可能部分反映了CESR和CONV的体重较大，缺乏个性化的大小和硬度，以及相对不太熟悉。受控的能量储存和返回增强了假体推送，但需要进一步的设计修改来改善截肢者行走的经济性。
The lack of functional ankle musculature in lower limb amputees contributes to the reduced prosthetic ankle push-off, compensations at other joints and more energetically costly gait commonly observed in comparison to non-amputees. A variety of energy storing and return prosthetic feet have been developed to address these issues but have not been shown to sufficiently improve amputee biomechanics and energetic cost, perhaps because the timing and magnitude of energy return is not controlled. The goal of this study was to examine how a prototype microprocessor-controlled prosthetic foot designed to store some of the energy during loading and return it during push-off affects amputee gait. Unilateral transtibial amputees wore the Controlled Energy Storage and Return prosthetic foot (CESR), a conventional foot (CONV), and their previously prescribed foot (PRES) in random order. Three-dimensional gait analysis and net oxygen consumption were collected as participants walked at constant speed. The CESR foot demonstrated increased energy storage during early stance, increased prosthetic foot peak push-off power and work, increased prosthetic limb center of mass (COM) push-off work and decreased intact limb COM collision work compared to CONV and PRES. The biological contribution of the positive COM work for CESR was reduced compared to CONV and PRES. However, the net metabolic cost for CESR did not change compared to CONV and increased compared to PRES, which may partially reflect the greater weight, lack of individualized size and stiffness and relatively less familiarity for CESR and CONV. Controlled energy storage and return enhanced prosthetic push-off, but requires further design modifications to improve amputee walking economy.
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影响因子：
3.2
作者：
ROBINSON, JL;SMIDT, GL;ARORA, JS
通讯作者：
ARORA, JS
影响因子：
2
作者：
Ruina, A;Bertram, JEA;Srinivasan, M
通讯作者：
Srinivasan, M
影响因子：
2.4
作者：
Houdijk, Han;Pollmann, Eveline;Polomski, Wojtek
通讯作者：
Polomski, Wojtek
DOI：
10.1115/1.1427703
发表时间：
2002-02-01
影响因子：
1.7
作者：
Kuo, AD
通讯作者：
Kuo, AD
DOI：
10.1097/00002060-199106000-00006
发表时间：
1991-06-01
影响因子：
3
作者：
GITTER, A;CZERNIECKI, JM;DEGROOT, DM
通讯作者：
DEGROOT, DM