一种新型髋关节假体柄的生物力学设计  

Biomechanical Design of a Novel Hip Prosthesis Stem

作　　者：禹健豪 张凯 李鹏翠[3] 卫小春[3] 王艳芹 何李明 闫瑞忠[5] 薛艳茹 武晓刚 陈维毅 YU Jianhao;ZHANG Kai;LI Pengcui;WEI Xiaochun;WANG Yanqin;HE Liming;YAN Ruizhong;XUE Yanru;WU Xiaogang;CHEN Weiyi(College of Biomedical Engineering,Taiyuan University of Technology,Taiyuan 030024,China;Department of Orthopedics,Huajin Orthopedic Hospital,Taiyuan 030024,China;Shanxi Provincial Key Laboratory for Repair of Bone and Soft Tissue Injury,Shanxi Medical University,Taiyuan 030001,China;Department of Orthopedics,Shanxi Bethune Hospital,Shanxi Academy of Medical Sciences,Taiyuan 030032,China;Department of Orthopedics,Taiyuan Central Hospital,Taiyuan 030009,China)

机构地区：[1]太原理工大学生物医学工程学院,太原030024 [2]华晋骨科医院骨科,太原030024 [3]山西医科大学骨与软组织损伤修复山西省重点实验室,太原030001 [4]山西白求恩医院(山西医学科学院)骨科,太原030032 [5]太原市中心医院骨科,太原030009

出　　处：《医用生物力学》2023年第6期1198-1204,共7页Journal of Medical Biomechanics

基　　金：国家自然科学基金项目(12272250,11972242,82172503);博士后基金项目(2020M680913);山西省留学归国基金项目(2022-081)。

摘　　要：目的基于一种新型髋关节假体柄设计,分析其在站立、行走、跑步和坐姿工况下的应力分布差异。方法基于人体CT数据,建立7组不同柄植入后的髋关节模型,利用有限元分析方法计算不同工况下假体柄和股骨应力情况。结果与植入传统假体柄相比,站立时新型假体柄植入后假体柄应力峰值降低23%、股骨应力降低72%。7种假体柄结果显示,假体柄高度为86.5 mm的新型设计最符合患者需求。多工况结果显示,患者处于坐姿,柄承受应力最小,使用寿命更长。结论新型假体柄有助于延长假体使用寿命,减小骨损伤风险。髋关节假体模型为后期柄的设计及患者术后康复提供科学理论支撑。Objective Based on the design of a novel hip prosthesis stem,the stress distribution differences during standing,walking,running and in sitting posture were analyzed.Methods Based on human CT data,seven groups of hips joint models implanted with different stems were established,and stresses of the prosthetic stem and femur under different working conditions were calculated by using the finite element analysis method.Results Compared with the traditional prosthetic stem,the peak stress of the novel prosthetic stem during standing was reduced by 23%,and the femoral stress was reduced by 72%.The results of seven models showed that the prosthetic stem with the height of 86.5 mm was the most suitable for patients'needs.The multi-working condition results showed that when the patient was in sitting posture,the stem had the least stress and a longer service life.Conclusions The novel prosthetic stem helps to prolong the life of the prosthesis and reduce the risk of bone damage.This hip prosthesis model provides scientific theoretical support for post-design of the stem and postoperative rehabilitation of patients.

关 键 词：全髋关节置换术 假体柄 股骨 应力分布 有限元分析 

分 类 号：R318.01[医药卫生—生物医学工程]