中国组织工程研究

中国组织工程研究 ›› 2011, Vol. 15 ›› Issue (35): 6483-6486.doi: 10.3969/j.issn.1673-8225.2011.35.006

• 数字化骨科 digital orthopedics • 上一篇    下一篇

三参数模型计算股骨颈松质骨压缩蠕变方程

王  杨1，刘大禹1，李新颖1，马洪顺2   

  1. 1吉林大学中日联谊医院，吉林省长春市  130031
    2吉林大学南岭校区工程力学系，吉林省长春市130022
  • 收稿日期:2011-05-09 修回日期:2011-07-22 出版日期:2011-08-27 发布日期:2011-08-27
  • 通讯作者: 马洪顺，教授，吉林大学南岭校区工程力学系，吉林省长春市130022 mahs@jlu.edu.cn
  • 作者简介:王杨☆，男，1977年生，吉林省长春市人，汉族，2010年吉林大学毕业，博士，主治医师，主要从事骨科临床与生物力学的研究。

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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259

被引次数

3

摘要：

背景：无论是人工关节的研究还是股骨颈骨折内外固定都需要了解股骨颈松质骨的蠕变力学特性。
目的：通过实验定量得出股骨颈蠕变与时间的变化规律。
方法：在电子万能试验机上对股骨颈松质骨8个试样进行蠕变实验。模拟人体体温36.5 ℃的温度场下进行实验，蠕变实验的应力增加速度为0.11 MPa/s。设定实验时间为7 200 s，采集100个数据以三参数模型处理实验数据。
结果与结论：股骨颈松质骨蠕变，最初600 s变化较快，之后应变缓慢上升，7 200 s蠕变量为0.84%。结果显示蠕变曲线是以指数关系变化的，三参数模型能很好的拟合股骨颈松质骨的蠕变曲线和方程。

关键词: 蠕变, 股骨颈, 松质骨, 力学特性, 三参数模型

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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