英语语法分析

Objective To observe the clinical effect of stemless hip replacement.

目的探讨无柄人工髋关节置换术的临床效果。

Stems sometimes branched, usually spirally twisted, leafy, rarely plants stemless.

茎有时分枝，通常螺旋扭曲，多叶，很少无茎的植株的。

Ti shape memory alloy stemless femoral prosthesis, and traditional stemmed hip prosthesis.

记忆合金无柄股骨假体股骨上的应力分布与正常股骨相近。