The prosthetic leg is an important part for the above-knee amputee to stand up and walk.

单腿膝上截肢的残疾人欲站立行走，假腿便要成为他们身体的重要组成部分。

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Based on the data obtained from gait tests, the differences of ground reaction forces and the movements of lower limbs between the sound side and prosthetic side of above knee amputee were analyzed.

在对膝上假肢使用者健侧和残侧的步态进行检测的基础上，对健、残侧在步态周期内的地面反力、下肢运动和时相对称性进行了对比和分析，时相对称性差是膝上截肢者步态的主要问题。

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An above-the-knee amputee, he can still be found in Central Park every Saturday morning, making people laugh -- and groan -- with his notoriously bad jokes.

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