双小腿截肢者假肢辅助下行走能力的评价

目的比较双小腿截肢者穿戴假肢的行走能力与正常人的差别，制定双小腿截肢者穿戴假肢行走能力参考指标。方法选择11 例双小腿截肢者作为截肢组，12 名健康成年人作为对照组，分别进行室内步态分析测试、室外行走1 km所用时间及能量消耗测试、静态站立平衡能力测试。结果室内步态分析测试中，截肢组自我感觉最舒适平均速度为1.07 m/s，对照组为1.29m/s。当受试者以自我感觉最舒适的速度行走时，截肢组部分步态时空参数与对照组存在显著性差异(P<0.05)；室外行走1 km所用时间及能量消耗与对照组存在显著性差异(P<0.05)；静态站立平衡与对照组比较无显著性差异(P>0.05)。结论双小腿截肢者与正常人的行走能力存在差异，对截肢者行走能力定量的评价能够为截肢者的康复提供更准确的参考。

Walking Ability of Bilateral Transtibial Amputees Assisted with Prostheses

Objective To compare the walking ability between bilateral transtibial amputees and normal controls, and develope reference indexes of bilateral transtibial amptees' walking ability while wearing prostheses. Methods 11 bilateral transtibial amputees served as amputation group, 12 normal subjects served as controls. The indoor gait characteristics, outdoor time cost and energy consumption, and static balance of both groups were evaluated. Results After the indoor gait analysis, the average self-selected-speed of the amputees was 1.07 m/s, while the self-selected-speed of the normal people was 1.29 m/s. When the subjects walked with their self-selected-speed, there were significant differences in some of the gait spatial and temporal parameters between 2 groups (P<0.05). When the subjects walked on a specially designed 1 km outdoor trail, differences of energy consumption and time cost were also observed (P<0.05). Static balance presented no significant difference between 2 groups (P>0.05). Conclusion The walking ability of the bilateral transtibial amputees wearing prostheses is different from normal people. Quantitative evaluation of walking ability can provide more accurate reference for the rehabilitation of amputees.