Evaluation of a Powered Ankle-Foot Prosthesis during Slope Ascent Gait.
Evaluation of a Powered Ankle-Foot Prosthesis during Slope Ascent Gait.
复制标题
DOI：
10.1371/journal.pone.0166815
复制
发表时间：
2016
期刊：
影响因子：
3.7
通讯作者：
Wilken JM
中科院分区：
文献类型：
--
作者：
Rábago CA;Aldridge Whitehead J;Wilken JM
被动假肢脚缺乏主动的跖屈和蹬离力，导致经胫骨截肢（TTA）患者在斜坡上升过程中的步态偏差和补偿。我们试图确定主动踝关节跖屈和动力假肢踝关节足（PWR）提供的推离力对单侧TTA患者上斜坡时下肢代偿的影响。我们假设增加的踝关节跖屈和蹬离力会减少通常观察到的被动，能量储存返回假肢踝足（ESR）的代偿。我们比较了10个TTA个体（年龄：30.2±5.3岁）与匹配的健全体（AB）个体在5°斜坡上升过程中的时空、运动学和动力学测量。TTA组分别用ESR和压水堆行走。与ESR相比，PWR产生了更大的假体踝关节跖屈和推离功率，并且更接近AB值。由于假体背屈有限，当过渡到义肢时，PWR的功能类似于被动ESR装置，这导致了类似的偏差和补偿。相反，当过渡到假肢时，PWR提供的踝关节跖屈和推离力的增加导致完整肢膝关节伸肌功率产生减少，减少了对完整肢膝关节的需求。
Passive prosthetic feet lack active plantarflexion and push-off power resulting in gait deviations and compensations by individuals with transtibial amputation (TTA) during slope ascent. We sought to determine the effect of active ankle plantarflexion and push-off power provided by a powered prosthetic ankle-foot (PWR) on lower extremity compensations in individuals with unilateral TTA as they walked up a slope. We hypothesized that increased ankle plantarflexion and push-off power would reduce compensations commonly observed with a passive, energy-storing-returning prosthetic ankle-foot (ESR). We compared the temporal spatial, kinematic, and kinetic measures of ten individuals with TTA (age: 30.2 ± 5.3 yrs) to matched abled-bodied (AB) individuals during 5° slope ascent. The TTA group walked with an ESR and separately with a PWR. The PWR produced significantly greater prosthetic ankle plantarflexion and push-off power generation compared to an ESR and more closely matched AB values. The PWR functioned similar to a passive ESR device when transitioning onto the prosthetic limb due to limited prosthetic dorsiflexion, which resulted in similar deviations and compensations. In contrast, when transitioning off the prosthetic limb, increased ankle plantarflexion and push-off power provided by the PWR contributed to decreased intact limb knee extensor power production, lessening demand on the intact limb knee.
登录
查看更多内容
影响因子：
2.4
作者：
Houdijk, Han;Pollmann, Eveline;Polomski, Wojtek
通讯作者：
Polomski, Wojtek
影响因子：
2.4
作者：
McIntosh, Andrew Stuart;Beatty, Karen T.;Vickers, Deborah R.
通讯作者：
Vickers, Deborah R.
影响因子：
2.4
作者：
Zmitrewicz, Robert J.;Neptune, Richard R.;Sasaki, Kotaro
通讯作者：
Sasaki, Kotaro
影响因子：
2.4
作者：
Lewis, Cara L.;Ferris, Daniel P.
通讯作者：
Ferris, Daniel P.
影响因子：
2.4
作者：
Wilken, Jason M.;Rodriguez, Kelly M.;Darter, Benjamin J.
通讯作者：
Darter, Benjamin J.