Journal of the Korean Society for Precision Engineering (한국정밀공학회지)

Korean Society for Precision Engineering (한국정밀공학회)
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A Study of Biomechanical Simulation Model for Spinal Fusion using Spinal Fixation System

척추경 고정 나사 시스템을 이용한 척추 유합 시술의 생체역학적 분석 모델 연구

  • Kim, Sung-Min (Department of Medical Bio Engineering, Dongguk Univ-Seoul) ;
  • Yang, In-Chul (Research Institute of Biotechnology, Dongguk Univ-Seoul) ;
  • Kang, Ho-Chul (Department of Medical Bio Engineering, Dongguk Univ-Seoul)
  • 김성민 (동국대학교-서울 의생명공학) ;
  • 양인철 (동국대학교-서울 생명과학연구원) ;
  • 강호철 (동국대학교-서울 의생명공학)
  • Published : 2010.02.01
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Abstract

In general, spinal fusion surgery takes pressure off the pain induced nerves, by restoring the alignment of the spine. Therefore spinal fixation system is used to maintain the alignment of spine. In this study, a biomechanical study was performed comparing the SROM(Spinal Range Of Motion) of three types of system such as Rigid, Dynesys, and Fused system to analyze the behavior of spinal fixation system inserted in vertebra. Dynesys system, a flexible posterior stabilization system that provides an alternative to fusion, is designed to preserve inter-segmental kinematics and alleviate loading at the facet joints. In this study, SROM of inter-vertebra with spinal fixation system installed in the virtual vertebra from L4 to S1 is estimated. To compare with spinal fixation system, a simulation was performed by BRG. LifeMOD 2005.5.0 was used to create the human virtual model of spinal fixation system. Through this, each SROM of flexion, extension, lateral bending, and axial rotation of human virtual model was measured. The result demonstrates that the movement of Dynesys system was similar to normal condition through allowing the movement of lumbar.

Keywords

References

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