Chinese Journal of Tissue Engineering Research ›› 2011, Vol. 15 ›› Issue (35): 6483-6486.doi: 10.3969/j.issn.1673-8225.2011.35.006

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Three-parameter calculation model of the femoral neck cancellous bone compression creep equation

Wang Yang1, Liu Da-yu1, Li Xin-ying1, Ma Hong-shun2   

  1. 1China-Japan Union Hospital of Jilin University, Changchun  130031, Jilin Province, China
    2Department of Engineering Mechanics, Nanling Campus, Jilin University, Changchun  130022, Jilin Province, China
  • Received:2011-05-09 Revised:2011-07-22 Online:2011-08-27 Published:2011-08-27
  • Contact: Ma Hong-shun, Professor, Department of Engineering Mechanics, Nanling Campus, Jilin University, Changchun 130022, Jilin Province, China mahs@jlu.edu.cn
  • About author:Wang Yang☆, Doctor, Attending physician, China-Japan Union Hospital of Jilin University, Changchun 130031, Jilin Province, China

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Abstract:

BACKGROUND: Both the studies of artificial joints and femoral and neck fracture fixation need to know the femoral neck cancellous bone creep mechanical properties.
OBJECTIVE: To quantitatively investigate the time-dependent variation of femoral neck creep.
METHODS: Creep experiments were conducted on eight femoral neck cancellous bone specimen using an electronic all-powerful machine. The experiments were performed at 36.5 ℃ as the body temperature, and the stress speed was
0.11 MPa/s. The experiment duration was 7 200 s. On hundred experiment data were collected and processed based on a three-parameter model.
RESULTS AND CONCLUSION: The femoral neck cancellous bone creep changed quickly within initially 600 s, and then went up slowly. The creep amount was 0.84%. The creep curves changed in an index manner, and the three-parameter model was very good to fit the creep curves and equations of the femoral neck cancellous bone.

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