Chinese Journal of Tissue Engineering Research ›› 2011, Vol. 15 ›› Issue (30): 5640-5645.doi: 10.3969/j.issn.1673-8225.2011.30.032

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Biomechanical study of spinal pedicle screws

Li Xian-ling1, Li Xian-jin2, Zhang Xue-jun1, Lu Shou-yan3, Zhao Ping4, Li Cheng-xin1, Sun Lin1, Zhang Kun-ya5, Zhang Qin-ming1   

  1. 1Department of Orthopedics, Beijing Children’s Hospital, Capital Medical University, Beijing  100045, China
    2Institute of Mechanics, Chinese Academy of Sciences, Beijing  100190, China
    3Beijing Zhongguancun Hospital, Beijing  100090, China
    4Department of Orthopedics, Anhui Provincial Children Hospital, Hefei  230051, Anhui Province, China
    5Biomechanics Laboratory, College of Bioengineering, Capital Medical University, Beijing  100069, China
  • Received:2011-02-23 Revised:2011-06-20 Online:2011-07-23 Published:2011-07-23
  • Contact: Zhang Qin-ming, Doctor, Professor, Department of Orthopedics, Beijing Children’s Hospital, Capital Medical University, Beijing 100045, China qzhang9611@yahoo.com
  • About author:Li Xian-ling★, Master, Physician, Department of Orthopedics, Beijing Children’s Hospital, Capital Medical University, Beijing 100045, China lixianling20002000@yahoo.com.cn

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Abstract:

BACKGROUND: Pedicle screw internal fixation after constant development and perfection has been advanced in spinal fixator field from aspect of biomechanics theory.
OBJECTIVE: To review the biomechanical study of spinal pedicle screws.
METHODS: CNKI and Pubmed (1986-01/2010-10) were retrieved to search the related articles about biomechanics of pedicle screws using the keywords of “pedicle screws, biomechanics” in Chinese and English. Finally 49 articles were included.
RESULTS AND CONCLUSION: In the development process of pedicle screws, biomechanics not only provides theoretical foundation for the development of the internal fixation, but also is the ultimate basis and holder effect standard for testing and evaluation of new designs. Pedicle screw implantation point, implant orientation, screw size, screw shape, screw materials have a certain impact on spinal biomechanics.

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