刘清平 陈少坚 陈晓亮 高连云 阮康明 陈雁华

    [关键词] 改良长U形空心椎弓根钉;锁定插销;力学性能;有限元分析

    [中图分类号] R528? ? ? ? ? [文献标识码] B? ? ? ? ? [文章编号] 1673-9701(2021)15-0156-04

    Mechanical analysis of modified long U-shaped hollow pedicle screw and its matching locking latch

    LIU Qingping CHEN Shaojian? ?CHEN Xiaoliang? ?GAO Lianyun? ?RUAN Kangming? ?CHEN Yanhua

    Department of Traumatic Orthopedics， Mindong Hospital Affiliated to Fujian Medical University， Ningde? ?355000， China

    [Abstract] Objective To compare the mechanical properties of the modified long U-shaped hollow pedicle screw and its matching locking latch with the conventional long U-shaped hollow pedicle screw and verify its mechanical stability. Methods Modified pedicle screws and matching locking latches (the observation group， n=10) and conventional hollow pedicle screws (the control group， n=10) were prepared， and the mechanical data such as yield load and stiffness were compared between the two groups through mechanical measurement experiment and finite element method， respectively. Results In the mechanical properties of single point bending static test and finite element analysis ......