目的探讨应用带螺旋刀片的PF NA治疗老年股骨粗隆间骨折的适应证、方法和临床疗效。

Objective To study the indicatio, method and clinical curative effect for treatment of senile intertrochanteric fractures with PFNA.

youdao

双轴心，螺旋进刀式刀片结构，破碎强而有力。

Pair of axles, spiral feed type blade structure, best efficient breaking.

youdao

直线或螺旋面刀片，安装在搅拌器转轴上，通过剪切动作，能够彻底混合材料；

Straight or helical faced blades, mounted on agitator shaft, thoroughly mix material with shearing action;

youdao