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Comparison of mechanical motion profiles following instrumented fusion and non-instrumented fusion at the L4-5 segment

Authors
 Ho-Joong Kim  ;  Seong-Hwan Moon  ;  Heoung-Jae Chun  ;  Kyoung-Tak Kang  ;  Hak-Sun Kim  ;  Eun-Su Moon  ;  Jin-Oh Park  ;  Byung-Yoon Hwang  ;  Hwan-Mo Lee 
Citation
 CLINICAL AND INVESTIGATIVE MEDICINE, Vol.32(1) : 64-69, 2009 
Journal Title
 CLINICAL AND INVESTIGATIVE MEDICINE 
ISSN
 0147-958X 
Issue Date
2009
MeSH
Adult ; Female ; Humans ; Lumbar Vertebrae* ; Male ; Middle Aged ; Range of Motion, Articular* ; Spinal Fusion*
Abstract
PURPOSE: To investigate the difference in motion profiles between instrumented and non-instrumented fusion of the lumbar spine. METHOD: In vivo retrospective radiological analysis of dynamic (flexion-extension) lateral plain films was performed in different lumbar spine fusion types. Twenty-eight patients underwent lumbar fusion surgery at the L4/5 level. Fourteen patients underwent anterior fusion surgery without implantation, and the others underwent posterior instrumented fusion. Segmental angular motion was measured at the fused and adjacent levels using dynamic plain lateral film 2 years after operation. RESULTS: The anterior uninstrumented fusion group showed mean 2.0 degrees of segmental angular motion at the fused level compared with mean of 0.8 degrees in the posterior instrumented fusion group (P < 0.05). In contrast, at the proximal adjacent level, decreased angular motion (mean 7.7 degrees ) was noted in the anterior uninstrumented fusion group compared with mean 11.6 degrees in the posterior instrumented fusion group (P < 0.05). CONCLUSION: This study suggests that differing stiffness of fusion segments could cause different mechanical motion profiles at adjacent segments.
Full Text
http://cimonline.ca/index.php/cim/article/viewFile/5089/1925
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
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/22282913/103823
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