Compensatory mechanisms of transtibial amputees during circular turning.
Compensatory mechanisms of transtibial amputees during circular turning.
复制标题
经胫骨截肢者在圆周转动过程中的补偿机制。
DOI：
10.1016/j.gaitpost.2011.05.014
复制
发表时间：
2011
期刊：
影响因子：
2.4
通讯作者：
R. Neptune
中科院分区：
文献类型：
--
作者：
Jessica D Ventura;A. Segal;G. Klute;R. Neptune
转弯在日常生活活动中扮演着重要的角色，它需要地面反作用力的调制来加速身体的质心沿着转弯的路径。由于踝跖屈肌是地面反作用力的主要推动者，因此尚不清楚经胫骨截肢者在没有这些重要肌肉的情况下如何执行转弯任务。本研究的目的是通过分析残余腿和完整腿的径向和前后地面反应冲动以及矢状、横向和冠状关节工作来确定经胫骨截肢者在简单的转向任务中使用的补偿机制。这些数量进行了分析与剩余的腿在内侧和外侧的转折，并与非截肢者进行比较。分析表明，截肢者和非截肢者使用不同的关节策略来转向。截肢者主要依靠矢状面髋关节工作来转动，而非截肢者主要依靠矢状面中的踝关节工作和冠状面中的髋关节工作。策略上的差异很可能是由于截肢者使用的被动假肢脚提供的动力最小，也许是希望尽量减少跌倒的风险。了解这些不同的转向策略将有助于开发有效的康复治疗和假肢装置，提高截肢者的流动性。
Turning plays a prominent role in daily living activities and requires the modulation of the ground reaction forces to accelerate the body's center-of-mass along the path of the turn. With the ankle plantarflexors being prominent contributors to the propulsive ground reaction forces, it is not clear how transtibial amputees perform turning tasks without these important muscles. The purpose of this study was to identify the compensatory mechanisms used by transtibial amputees during a simple turning task by analyzing the radial and anterior–posterior ground reaction impulses and sagittal, transverse and coronal joint work of the residual and intact legs. These quantities were analyzed with the residual leg on both the inside and outside of the turn and compared to non-amputees. The analysis showed that amputees and non-amputees use different joint strategies to turn. Amputees rely primarily on sagittal plane hip joint work to turn while non-amputees rely primarily on ankle work in the sagittal plane and hip joint work in the coronal plane. Differences in strategies are most likely due to the minimal power output provided by the passive prosthetic feet used by amputees and perhaps a desire to minimize the risk of falling. Understanding these differences in turning strategies will aid in developing effective rehabilitation therapies and prosthetic devices that improve amputee mobility.
影响因子：
2.4
作者：
Lelas, JL;Merriman, GJ;Kerrigan, DC
通讯作者：
Kerrigan, DC
影响因子：
2.4
作者：
Neptune, RR;Kautz, SA;Zajac, FE
通讯作者：
Zajac, FE