屈展
屈展-
功能指数：髋关节屈、伸、展、收、旋转度评分达Harris髋关节活动范围评分4～5分为3分；
Function index : 4-5 marks in flexion , stretch , extension , contraction , and rotation degree of hip joint were regarded as 3 marks in Harris hip score ;
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其中肩关节采用了球轴连接装置，使其具有屈伸、收展、旋转等方向的运动功能，肘关节具有屈伸功能。
The shoulder joint was made of ball bearing , so it had the movement function of bending , extending and rotating in multi-direction .