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http://dx.doi.org/10.3795/KSME-A.2011.35.10.1205

Influence of Ligament Deficits and Isthmic Defects on Instability in Lumbar Spine  

Choi, Dae-Kyung (Department of Mechanical Engineering, Kyung Hee University)
Kim, Yoon-Hyuk (Department of Mechanical Engineering, Kyung Hee University)
Kim, Kyung-Soo (Department of Mathematics, Kyonggi University)
Publication Information
Transactions of the Korean Society of Mechanical Engineers A / v.35, no.10, 2011 , pp. 1205-1210 More about this Journal
Abstract
Spinal instability known to be related to low back pain. However, the quantitative definition of spinal instability has not been established because there is a lack of consensus regarding clinical and radiological studies. In addition, the major factors affecting such instability have not been elucidated, although disc degeneration, disc injury, ligament injury, and isthmic defects are considered to result in such problems. In this study, individual and combined influences on spinal instability with a three-dimensional finite element model of a one-level lumbar spinal motion segment were investigated, under the assumption that the rotation and translation in the sagittal plane under flexion and extension represented the instability indices. The results could be helpful in understanding the causes and mechanisms of spinal instability in the lumbar spine.
Keywords
Lumbar Spine; Instability; Ligament Injury; Isthmic Defect; Finite Element Analysis;
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