Chinese Journal of Tissue Engineering Research ›› 2012, Vol. 16 ›› Issue (22): 4067-4070.doi: 10.3969/j.issn.1673-8225.2012.22.018

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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*

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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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