中国组织工程研究

中国组织工程研究 ›› 2010, Vol. 14 ›› Issue (35): 6517-6519.doi: 10.3969/j.issn.1673-8225.2010.35.014

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

有限元法分析举重运动员预备提铃动作过程中腰椎节段的受力变化

鲍春雨，孟庆华   

  1. 天津体育学院，天津市  300381
  • 出版日期:2010-08-27 发布日期:2010-08-27
  • 作者简介:鲍春雨☆，男，1973年生，黑龙江省哈尔滨市人，汉族，2009年东北林业大学毕业，博士，讲师，主要从事运动生物力学方面的研究。 chunyubao730102@163.com
  • 基金资助:

    天津体育学院青年科研基金项目(ZR-0904)；天津体育学院博士专项基金。

Force bearing of lifters’ lumbar segment during preparation to lift barbell: A finite element analysis  

Bao Chun-yu, Meng Qing-hua   

  1. Tianjin University of Sport, Tianjin  300381, China
  • Online:2010-08-27 Published:2010-08-27
  • About author:Bao Chun-yu☆, Doctor, Lecturer, Tianjin University of Sport, Tianjin 300381, China chunyubao730102@163.com
  • Supported by:

    the Youth Scientific Foundation Program of Tianjin University of Sport, No. ZR-0904*; the Doctoral Foundation of Tianjin University of Sport*

PDF

317

被引次数

6

摘要：

背景：多年来，国内外学者对腰椎的生物力学特性进行了大量的研究，但是由于腰椎生理结构的复杂性以及研究手段的局限性，很多问题有待于进一步探索，特别是对举重运动员腰部损伤的防治是目前亟待解决的问题。
目的：建立人体完整腰段脊柱三维有限元模型，分析举重运动员预备提铃动作时腰椎节段的受力特点。
方法：引入“组装搭配式”思想，利用Dicom数据，建立人体脊柱腰椎节段(L 1~5)完整的、真实的三维有限元模型。并模拟举重运动员预备提铃动作时，各椎体及椎间盘所受应力情况。
结果与结论：举重运动员预备提铃动作时，各椎体应力分布在椎体前下方，此处应力水平明显高于其他部位，椎体后部结构中椎弓根处出现应力集中现象，应力也处于较高水平。椎间盘应力分布在纤维环的中部和前部，但是前部更为明显。此时，不同椎体、腰椎间盘所承受的应力不同，其应力表现为自上向下呈逐渐增大趋势。各椎体的应力值大于其下方椎间盘的应力值，各椎体应力值是其下方椎间盘的四五倍。证实实验所建腰椎节段三维有限元模型可以用于模拟脊柱腰椎节段的生物力学特性研究。

关键词: 举重, 有限元法, 模型, 腰椎, 生物力学

Abstract:

BACKGROUND: Studies have explore the biomechanical properties of the lumbar spine, but because of the complexity of spinal anatomy and limitations of research methods, the prevention of waist injuries in lifters requires investigation.
OBJECTIVE: To establish the finite element model of complete human lumbar spine to analyze the lumbar motion segment loading characteristics when lifters are ready to lift barbell.
METHODS: The three-dimensional, comprehensive and realistic finite element model of the lumbar spine (L1-5) was established using datum of Dicom based on opinion of “assembled construction”, and the biomechanics of a lumbar motion segment during preparing lifting barbell was simulated.
RESULTS AND CONCLUSION: During preparation of lifting barbell the equivalent stress on the anterior-lower location of vertebral body was greater than the other sites, and stress on pedicle of vertebral arch was higher. The equivalent stress of intervertebral disc was observed at middle-anterior location of exterior annulus fibrosus, especial anterior location in flexion. The equivalent stress on the vertebral body and intervertebral disc showed gradually ascending trend from up to low sites. The stress on the vertebral body was 4-5 times higher than the below intervertebral disc’s. The three-dimensional finite element model could be used for studying the biomechanics of the lumbar spine.

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