Biomechanical analysis of facet joint slippage of lumbosacral joints under static loadings

Li Xin Guo, Ming Zhang

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

1 Citation (Scopus)


In this study, three-dimensional laser scanning technology was employed to measure geometrical data of the human spine vertebrae. Based on the measured point-cloud data of the vertebra figuration, a detailed three-dimensional nonlinear finite element model of the lumbosacral joint L5-S1 of the spine was created and used to investigate the biomechanical properties of the lumbosacral joint. The finite element model was finely developed and validated according to available experimental results. The results show that facet articulations are important to stability of the lumbosacral joint. 1000N compressive force or 100N anterior force may yield the facet joint slippage for around 1mm and the facet contact surfaces may slip for around 2.8mm under both of 10Nm extension moment and 1000N compressive force. The finite element model might provide a detailed and accurate computational model for biomechanical analyses of the lumbosacral joint and studies of relative instrument implant and individual design of instruments.
Original languageEnglish
Title of host publicationProceedings - 2010 3rd International Conference on Biomedical Engineering and Informatics, BMEI 2010
Number of pages4
Publication statusPublished - 1 Dec 2010
Event3rd International Conference on BioMedical Engineering and Informatics, BMEI 2010 - Yantai, China
Duration: 16 Oct 201018 Oct 2010


Conference3rd International Conference on BioMedical Engineering and Informatics, BMEI 2010


  • Facet articulation component
  • Finite element analysis
  • Laser scanning
  • Lumbosacral joint
  • Spine

ASJC Scopus subject areas

  • Biomedical Engineering
  • Health Informatics
  • Health Information Management

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