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A validated finite element analysis of nerve root stress in degenerative lumbar scoliosis

Authors
 Ho-Joong Kim  ;  Heoung-Jae Chun  ;  Kyoung-Tak Kang  ;  Hwan-Mo Lee  ;  Hak-Sun Kim  ;  Eun-Su Moon  ;  Jin-Oh Park  ;  Bo-Hyun Hwang  ;  Ju-Hyun Son  ;  Seong-Hwan Moon 
Citation
 MEDICAL & BIOLOGICAL ENGINEERING & COMPUTING, Vol.47(6) : 599-605, 2009 
Journal Title
 MEDICAL & BIOLOGICAL ENGINEERING & COMPUTING 
ISSN
 0140-0118 
Issue Date
2009
MeSH
Finite Element Analysis ; Humans ; Lumbar Vertebrae/physiopathology* ; Male ; Middle Aged ; Models, Neurological* ; Scoliosis/physiopathology* ; Spinal Nerve Roots/physiopathology* ; Stress, Mechanical
Keywords
Degenerative lumbar scoliosis ; Finite ; element analysis ; Nerve root stress ; Rotatory listhesis
Abstract
Few studies have shown the relationship between the curve pattern and nerve root symptoms in degenerative lumbar scoliosis, and its mechanism remains unclear. We developed a finite element model of two patterns of scoliotic curves (isolated lateral bending curve, lateral bending combined with rotation curve). The stress on the nerve root was calculated on both sides (right and left) of the apex vertebra. In the lateral bending curves without rotation, the compressive nerve root stress on the concave side was greater than the tensile stress on the convex side at the apex vertebra. In contrast, when the segmental rotation of the vertebrae was added to the lateral bending curve, there was significantly higher tensile stress on the convex side, and lower compressive stress on the concave side. To conclude, rotatory listhesis may be an important pathomechanism in the development of neurologic symptoms on the convex side of the curve.
Full Text
http://link.springer.com/article/10.1007%2Fs11517-009-0463-y
DOI
10.1007/s11517-009-0463-y
Appears in Collections:
1. College of Medicine (의과대학) > Dept. of Orthopedic Surgery (정형외과학교실) > 1. Journal Papers
Yonsei Authors
Kim, Hak Sun(김학선) ORCID logo https://orcid.org/0000-0002-8330-4688
Kim, Ho Joong(김호중)
Moon, Seong Hwan(문성환)
Moon, Eun Su(문은수)
Park, Jin Oh(박진오)
Lee, Hwan Mo(이환모) ORCID logo https://orcid.org/0000-0002-5405-3832
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/103822
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