Chinese Journal of Tissue Engineering Research ›› 2010, Vol. 14 ›› Issue (28): 5244-5247.doi: 10.3969/j.issn.1673-8225.2010.28.026

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Creep properties of rat brachial plexus 

Feng Tie-jian1, Sun Chang-jiang2, Luo Min2, Ma Hong-shun3   

  1. 1 Nanling Campus Hospital of Jilin University, Changchun  130022, Jilin Province, China; 2 China-Japan Union Hospital of Jilin University, Changchun  130031, Jilin Province, China; 3 Department of Engineering Mechanics, Nanling Campus of Jilin University, Changchun  130022, Jilin Province, China
  • Online:2010-07-09 Published:2010-07-09
  • Contact: Ma Hong-shun, Professor, Department of Engineering Mechanics, Nanling Campus of Jilin University, Changchun 130022, Jilin Province, China mahs@jlu.edu.cn
  • About author:Feng Tie-jian, Nanling Campus Hospital of Jilin University, Changchun 130022, Jilin Province, China

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Abstract:

BACKGROUND: The suture anastomosis of brachial plexus injury brachial plexus is necessary to understand the mechanical creep characteristics. Previous studies mainly focus on tensile mechanical properties of brachial plexus. Reports concerning creep on the brachial plexus viscoelastic properties are few.
OBJECTIVE: To analyze the experimental animals creep mechanical properties of the brachial plexus in order to provide creep parameters for clinic.
METHODS: Shimadzu Universal testing machine was used to perform creep experiments of brachial plexus in experimental animals. The speed of creep stress increase was 0.01 GPa/s, with experimental time of 7 200 s. In total 100 experimental data were collected and processed using normalized analysis.
RESULTS AND CONCLUSION: Creep of animal brachial plexus specimen at 7 200 s was 5.6%. Creep values change rapidly during the first 600 seconds, and then strain was increased slowly and the value of equilibrium curve could be reached at 7 200 s. The results show that the creep curve changes in an exponential relationship, and the brachial plexus has mechanical properties of viscoelastic creep.

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