中国组织工程研究

中国组织工程研究 ›› 2012, Vol. 16 ›› Issue (22): 4067-4070.doi: 10.3969/j.issn.1673-8225.2012.22.018

• 骨与关节生物力学 bone and joint biomechanics • 上一篇    下一篇

髋臼横断骨折双柱内固定的生物力学分析*★

吴淑琴   

  1. 中北大学机械工程与自动化学院，山西省太原市030051
  • 收稿日期:2012-01-15 修回日期:2012-02-13 出版日期:2012-05-27 发布日期:2012-05-27
  • 作者简介:吴淑琴★，女，1972年生，山西省太原市，汉族，1996年中北大学毕业，硕士，副教授，主要从事生物力学研究。wushuqin@nuc.edu.cn
  • 基金资助:

    国家自然科学基金项目资助(30870603)。

Biomechanical analysis of double-column internal fixation on acetabular transverse fracture

Wu Shu-qin   

  1. School of Mechanical Engineering & Automatization, North University of China, Taiyuan  030051, Shanxi Province, China
  • Received:2012-01-15 Revised:2012-02-13 Online:2012-05-27 Published:2012-05-27
  • About author:Wu Shu-qin★, Master, Associate professor, School of Mechanical Engineering & Automatization, North University of China, Taiyuan 030051, Shanxi Province, China wushuqin@nuc.edu.cn
  • Supported by:

    the National Natural Science Foundation of China, No.30870603*

PDF

351

被引次数

9

摘要：

背景：骨盆髋臼骨折治疗的关键是精确的骨折复位和稳定的内固定。
目的：分析比较3种髋臼横断骨折双柱内固定手术的生物力学特性，找到固定效果最好的双柱内固定手术方法。
方法：建立各向异性的骨盆髋臼横断骨折模型，通过对最大位移、最大等效应力等评价指标的有限元综合分析，比较分析双柱螺钉、前柱螺钉后柱钢板、双柱钢板等3种双柱内固定方法在站立位置的生物力学性能差异。
结果与结论：有限元分析双柱螺钉固定最大位移1.827 mm，最大等效应力26.589 MPa；前柱螺钉后柱钢板固定最大位移2.080 mm，最大等效应力106.04 MPa；双柱钢板固定最大位移2.987 mm，最大等效应力200.37 MPa。3种双柱内固定方法稳定性最好的是双柱螺钉固定，最后是双柱钢板固定。
 

关键词: 髋臼, 横断骨折, 内固定, 有限元建模, 生物力学

Abstract:

BACKGROUND: The key of pelvic and acetabular fracture treatment is accurate fracture reduction and stable internal fixation.
OBJECTIVE: To analyze the biomechanical characteritics of three kinds of double-column internal fixation operation for acetabular transverse fracture in order to find the most stable method.
METHODS: Anisotropic pelvic fracture model was established, and based on the maximum displacement, the maximum equivalent stress and other comprehensive evaluation indexes, the biomechanics of double-column screw, anterior-column screw and posterior-column plate, double-column plate on the standing position were analyzed.
RESULTS AND CONCLUSION: Finite element analysis showed that the maximum displacement of double-column screw was 1.827 mm，maximum equivalent stress was 26.589 MPa; the maximum displacement of screw and posterior-column plate was 2.080 mm, maximum equivalent stress was 106.04 MPa; the maximum displacement of double-column plate was 2.987 mm, maximum equivalent stress was 200.37 MPa. The most stable method is double-column screw and the last one is double-column plate.

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