摘要
全髋关节置换术中髋臼铣削表面质量是影响髋臼假体初期稳定性和骨组织长入的重要因素,髋臼铣削表面质量差是造成髋臼假体早期固定失效的重要原因。定义了两个参数-未切除断面最大高度hl和未切除断面面积A-来评价髋臼铣削的表面质量,并以这两个参数为目标建立了髋臼铣削表面质量的关系模型,然后基于此关系模型分析了髋臼锉各结构参数对表面质量的影响规律,并据此设计新结构参数的髋臼锉,最后利用3D打印技术制备了新结构髋臼锉,并进行了试验验证。结果表明,由髋臼铣削表面质量关系模型获得的预测值与试验结果比较符合,未切除断面最大高度预测误差小于4.4%,未切除断面面积预测误差小于6.2%;髋臼锉上切削齿的数量、齿形和排布方式对表面质量具有重大影响;新结构髋臼锉可有效提高髋臼铣削的表面质量,改善髋臼假体的初期稳定性和骨组织长入,避免髋臼假体的早期固定失效,提高手术质量。
The surface quality of the acetabular reaming during total hip replacement is an important factor affecting the initial stability and bone ingrowth of the acetabular prosthesis.Two parameters–the unresectioned maximum height hl and area A of cross-sectional area–are defined to evaluate the surface quality of acetabular reaming,an analytical model of the surface quality is proposed based the these two parameters for acetabular reaming,the influence of the various structural parameters of the acetabular reamer on the surface quality is studied based on the analytical model,and an acetabular reamer with new structural parameters is proposed based on the investigation,and manufactured with 3D printing technology,and verified with experiments.The results show that the predicted results of the proposed analytical model of surface quality of acetabular reaming are consistent with the experimental results.The predicted error of the maximum height is less than 4.4%,and the predicted error of the unresectioned area is less than 6.2%.The quantity,tooth profile and arrangement of the cutting teeth have a significant impact on the surface quality.The surface quality of acetabular reaming can be improved effectively by the acetabular reamer with new structural parameters,and the initial stability and bone ingrowth of the acetabular prosthesis can be enhanced,and the early fixation failure of the acetabular prosthesis can be avoided and the quality of surgery can be improved correspondingly.
作者
隋建波
郭凯杰
罗嘉琪
陈志桦
刘志华
王成勇
陈滨
SUI Jianbo;GUO Kaijie;LUO Jiaqi;CHEN Zhihua;LIU Zhihua;WANG Chengyong;CHEN Bin(School of Electromechanical Engineering,Guangdong University of Technology,Guangzhou 510006;Guangdong Provincial Key Laboratory of Minimally Invasive Surgical Instruments and Manufacture Technology,Guangdong University of Technology,Guangzhou 510006;Nanfang Hospital,Southern Medical University,Guangzhou 510515)
出处
《机械工程学报》
EI
CAS
CSCD
北大核心
2021年第11期93-101,共9页
Journal of Mechanical Engineering
基金
国家自然科学基金(51805091)
广东省自然科学基金(2018A030313713)资助项目。
关键词
髋臼锉
髋臼铣削
表面质量
关系模型
齿形
排布方式
acetabular reamer
acetabular reaming
surface quality
analytical model
tooth profile
arrangement
作者简介
通信作者:隋建波,男,1984年出生,博士,副教授,硕士研究生导师。主要研究方向为医疗器械设计与制造。E-mail:jsui@gdut.edu.cn。
