Chinese Journal of Tissue Engineering Research ›› 2011, Vol. 15 ›› Issue (13): 2335-2338.doi: 10.3969/j.issn.1673-8225.2011.13.014

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Finite element analysis of the intervertebral disc during lumbar obligue-pulling manipulation

Xu Hai-tao1, Li Song1, Liu Lan1, Lai Qiu-lian1, Luo Xiao-wei1, Xu Da-chuan2, Li Yi-kai3   

  1. 1Department of Orthopedics, the 458 Hospital of Chinese PLA, Guangzhou  510602, Guangdong Province, China; 2Department of Anatomy, Southern Medical University, Guangzhou  510515, Guangdong Province, China; 3Department of Orthopedics and Traumatology of TCM, Southern Medical University, Guangzhou  510515, Guangdong Province, China
  • Received:2010-11-16 Revised:2011-02-12 Online:2011-03-26 Published:2013-10-23
  • About author:Xu Hai-tao☆, Doctor, Attending physician, Department of Orthopedics, the 458 Hospital of Chinese PLA, Guangzhou 510602, Guangdong Province, China xhtbyl@fimmu.com
  • Supported by:

    the Administration of Traditional Chinese Medicine of Guangdong Province, No. 2007207*

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Abstract:

BACKGROUND: Traditional Chinese manipulation maneuver is researched using computer technology and finite element method, which can explain the action mechanism, indication and contraindication of manipulation and provide objective, scientific, theoretical basis for clinical lumbar obligue-pulling manipulation. 
OBJECTIVE: To study the trait of displacement and intra-stress distribution of intervertebral disc during lumbar obligue-pulling manipulation.
METHODS: 3D finite element model of L4-5 segments were constructed based on normal lumbar CT images with Mimics software system. The lumbar obligue-pulling manipulation was decomposed by principium of manipulation. The parameter of mechanics was analyzed with the finite element system. The change of intra-stress distribution and displacement in lumbar intervertebral disc were displayed simultaneous during simulating manipulation.
RESULTS AND CONCLUSION: The intra-stress of posterior area was smaller than that of intervertebral disc during the lumbar obligue-pulling manipulation. There was a palinal vector from center of the intervertebral disc to the right, which distorted the intervertebral disc. The lumbar obligue-pulling manipulation is safe to the intervertebral disc, and it is more rational for manipulation in the healthy side. The manipulation is not applicable to lumbar spinal stenosis.

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