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KMID : 0386420070200010070
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Journal of the Korean Fracture Society
2007 Volume.20 No. 1 p.70 ~ p.75
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Biomechanical Efficacy of Various Anterior Spinal Fixation in Treatment of Thoraco-Lumbar Spine Fracture
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Park Ye-Soo
Kim Hyoung-Jin
Choi Choong-Hyeok
Park Won-Man
Kim Yoon-Hyuk
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Abstract
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Purpose: To evaluate the biomechanical results according to various anterior spinal fixation methodology in the treatment of thoracolumbar spine fracture.
Materials and Methods: The comparative analysis of fixation method was evaluated by three dimensional finite element model using the 1 mm reconstruction image of CT. Authors evaluated the flexion, extension, lateral bending, torsional stresses with 12 fixation methods for the compression and burst fracture.
Results: In biomechanical analysis, stiffness of body-fixation device was more stable in two-rod system in compression fracture and was stable in one-rod, two-rod system in burst fracture, but two-rod system was showed over-increase of stiffness.
Conclusion: Authors recommend the usage of two-rod system in anterior fixation only and anterior one-rod system in anterior-posterior fixation.
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KEYWORD
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Thoracolumbar spine fracture, Anterior fixation, One-rod system
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