中国组织工程研究

中国组织工程研究 ›› 2011, Vol. 15 ›› Issue (13): 2304-2308.doi: 10.3969/j.issn.1673-8225.2011.13.007

• 人工假体 artificial prosthesis • 上一篇    下一篇

全膝关节假体三维有限元模型的建立

李晓淼，沈  奕，王伟力   

  1. 上海交通大学医学院附属仁济医院骨科，上海市 200127
  • 收稿日期:2010-12-07 修回日期:2011-01-11 出版日期:2011-03-26 发布日期:2011-03-26
  • 通讯作者: 王伟力，主任医师，教授，上海交通大学医学院附属仁济医院骨科，上海市 200127 drwangwl@126. com
  • 作者简介:李晓淼★，男，1980年生，上海市人，汉族， 2009年上海交通大学医学院毕业，硕士，医师，主要从事关节外科，髋、膝关节置换的基础研究及临床应用研究。 leexm1123@ hotmail.com

Construction of a three-dimensional finite element model of total knee prosthesis

Li Xiao-miao, Shen Yi, Wang Wei-li   

  1. Department of Orthopaedics, Renji Hospital of Shanghai Jiao Tong University, Shanghai  200127, China
  • Received:2010-12-07 Revised:2011-01-11 Online:2011-03-26 Published:2011-03-26
  • Contact: Wang Wei-li, Chief physician, Professor, Department of Orthopaedics, Renji Hospital of Shanghai Jiao Tong University, Shanghai 200127, China drwangwl@126.com
  • About author:Li Xiao-miao★, Master, Physician, Department of Orthopaedics, Renji Hospital of Shanghai Jiao Tong University, Shanghai 200127, China leexm1123@hotmail.com

PDF

589

被引次数

21

摘要：

背景：由于全膝关节的结构形态具有运动复杂、受力复杂等特性，造成了数据采集，模型建立困难，影响了三维实体模型的准确性。
目的：建立全膝关节假体三维有限元模型。
方法：通过Microscribe G2三维定位扫描仪取得假体数据、Geomagic软件进行曲面拟合、导入大型有限元分析软件Abaqus6.7.2建立全膝关节假体三维有限元模型，对如何提高三维有限元模型的精确性，扩大模型的开放性以及提高建模效率，增加关节外科医师在建模过程中的参与性进行探讨。
结果与结论：通过Microscribe G2三维定位扫描仪取得假体数据、Geomagic软件进行曲面拟合、导入大型有限元分析软件Abaqus6.7.2建立了全膝关节假体三维有限元模型。与以往建模方法比较，该模块设计使模型更加精准，使用更灵活，简化了有限元前期处理过程，明显降低了建模难度，提高了建模效率，增加了模型的扩展形，并获得了更高的精度。

关键词: 全膝关节置换, 假体, 聚乙烯, 有限元分析, 生物力学

Abstract:

BACKGROUND: Due to the complexity of the movement and stress of the knee prosthesis, it is difficult to establish a knee prosthesis model and to capture the data. The accuracy of three-dimensional (3-D) model of the knee prosthesis is affected by many factors.
OBJECTIVE: To establish 3-D finite element model of total knee prosthesis.
METHODS: 3-D scanning technology was used to capture the image data. Geomagic and Abaqus software was utilized to rebuild 3-D total knee prosthesis model based on the scanned images and image data. It is discussed to improve the accuracy, the opening and the efficiency of the reconstruction of the 3-D finite element model.
RESULTS AND CONCLUSION: The 3-D finite element model of knee prosthesis was successfully established by Geomagic and Abaqus software based on the scanned images and image data. Compared with the previews method of the knee prosthesis model reconstruction, the design of this new model is more accurate and flexible. Especially, it simplifies the procedure of the finite element analysis. And the possibility for joint surgeons to participate in building this model is increased. A more simple and accurate knee prosthesis finite model could be provided to the clinics.

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