基于X线片定制股骨柄假体的设计原理及方法

发布时间：2018-03-17 22:12

本文选题：X线片　切入点：定制型假体　出处：《医用生物力学》2014年06期 　论文类型：期刊论文

【摘要】：目的介绍自编的基于X线片设计定制型股骨柄假体程序系统的设计原理及功能模块。方法利用图像处理方法提取X线片上一些患者股骨解剖特征点(如小粗隆最高点、股骨头中心及转子间窝等)、2个规划的手术截骨位置点(大粗隆侧截骨边界位置点及截骨线最低点位置点)以及一些设计用关键位置点(如假体远端位置、假体颈干连接段最高点位置等),以此预测患者股骨近端髓腔,并通过输入设计参数值(如颈干角、前倾角、预留的松质骨厚度、假体匹配段截面圆弧半径及假体过渡段高度等)设计出定制型股骨柄假体。并对设计出的定制股骨柄假体进行匹配区域多个截面的二维截面验证和三维的总体验证。结果根据验证情况,调整设计参数重新生成股骨柄假体模型点云数据,使设计出的股骨柄假体与患者股骨腔相匹配,达到定制型假体设计要求。结论介绍的程序系统可用于为患者设计定制型股骨柄假体,设计周期较短,成本较低,有利于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。
[Abstract]:Objective to introduce the design principle and function module of customized femoral handle prosthesis program system based on X-ray film. The center of the femoral head and the intertrochanteric fossa, two planned osteotomy sites (the great trochanter side osteotomy boundary and the lowest point of the osteotomy line), and some design key points (such as the distal position of the prosthesis), In order to predict the proximal medullary cavity of the femur, and input the design parameters (such as neck shaft angle, anteversion angle, reserved thickness of cancellous bone, etc.). The section arc radius and the height of the prosthetic transition segment are used to design the customized femur handle prosthesis. The designed customized femur handle prosthesis is verified by two-dimensional cross-section and three-dimensional experience of multiple cross-sections in the matching region. The results are based on the verification, Adjusting the design parameters to reconstruct the point cloud data of the femoral prosthesis model to match the designed femoral pedicle prosthesis with the femoral cavity of the patient. Conclusion the introduced program system can be used to design customized femoral handle prosthesis for patients with short design period and low cost, which is helpful to promote the clinical application of customized femoral handle prosthesis. Further improve the quality of life of patients.
【作者单位】：江苏大学机械工程学院;上海交通大学数字医学临床转化教育部工程研究中心;
【基金】：江苏大学高级人才项目启动基金(10JDG043)
【分类号】：R318.17

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