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A Study of Biomechanical Simulation Model for Spinal Fusion using Spinal Fixation System  

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)
Publication Information
Journal of the Korean Society for Precision Engineering / v.27, no.2, 2010 , pp. 137-144 More about this Journal
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
Spine; Spinal Fixation System; Spinal Fusion; Dynesys; LifeMOD; Spinal Range of Motion;
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Times Cited By KSCI : 1  (Citation Analysis)
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