标准截面形状定制型股骨柄假体设计  

Design of customized hip stem prosthesis with standard cross-section shape

作　　者：马如宇[1] 顾寄南[1] 韦建和[2] 

机构地区：[1]江苏大学机械工程学院,镇江212013 [2]上海交通大学数字医学临床转化教育部工程研究中心,上海200030

出　　处：《医用生物力学》2014年第5期418-423,共6页Journal of Medical Biomechanics

基　　金：江苏大学高级人才项目启动基金(10JDG043)

摘　　要：目的介绍一种标准截面形状定制型股骨柄假体结构以及自行开发的设计方法。方法首先利用DICOM格式的患者股骨CT图像,重建患者股骨近端模型;根据重建出的患者股骨近端模型构建股骨柄假体匹配段矩形的截面边界,并在矩形截面边界内用简单的线条初步构建出假体的截面轮廓曲线;利用股骨近端模型对初步设计出的股骨柄假体进行验证,并通过调整设计参数使最终设计出的个性化股骨柄假体与患者股骨髓腔相匹配。结果定制型人工髋关节股骨柄假体采用标准截面形状,便于快速设计出个性化假体,而且设计操作简单。参数化程序设计大大降低了个性化股骨柄假体的设计工作量。结论标准截面形状定制型股骨柄假体的设计将有助于提高定制型人工髋关节置换手术的成功率,促进定制型股骨柄假体在临床上的应用,进一步提高患者的生活质量。Objective To introduce the structure of the self-developed design for customized hip stem prothesis and decribe its standard cross-section shape.Methods The proximal femur model was reconstructed based on a patient＇ s CT image with DICOM format.The rectangle borders on cross-section of the matching area of the hip stem prosthesis were created,and the cross-section contour lines in rectangle borders were formed preliminarily by using simple lines.Based on the proximal femur model,the hip stem prosthesis was verified,and made modification to match the corresponding femoral cavity of the patient through adjusting design parameters.Results The cross-section of the customized hip stem prosthesis was of standard shapes,which was convenient for the quick design of this kind of individualized prosthesis with a simple design course.The parametric design program greatly reduced the workload when designing individualized hip stem prosthesis.Conclusions The design of customized hip stem prosthesis with standard cross-section shape could help to increase the success rate of artificial hip replacement surgeries,promote the application of customized hip stem prosthesis in clinic,and further improve the life quality of patients.

关 键 词：CT图像 股骨柄假体 模型重建 截面 定制型假体 

分 类 号：R318.01[医药卫生—生物医学工程]