Document Detail


Effects of kyphosis and lordosis on the remaining lumbar vertebral levels within a thoracolumbar fusion: an experimental study of the multisegmental human spine.
MedLine Citation:
PMID:  12132799     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
This study was done to determine the motion of the whole lumbar spine after internal fixation and the effect of kyphosis and lordosis on the remaining vertebral levels. Baseline motion analysis of sagittal, frontal, and transverse planes was done to determine the intact range of motion. Three fusion configurations were tested: neutral position (0 degrees), 4.6 degrees +/- 2.0 kyphosis, and -6.2 degrees +/- 3.6 lordosis. The sagittal and frontal plane relative rotation of the instrumented segments (T12/L2) decreased an average of 74% and 60%, respectively, as compared with intact testing. Sagittal plane motion at the remaining segments increased for all fusion configurations when compared with intact motion and reached statistical significance at the L4/L5 level. No significant differences were found between fusion configurations (ie, fused neutral, kyphosis, and lordosis).
Authors:
F J Molz; J S Kirkpatrick; S M Reza Moeini; J I Partin; M W Bidez
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Publication Detail:
Type:  Comparative Study; Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Journal of the Southern Orthopaedic Association     Volume:  8     ISSN:  1059-1052     ISO Abbreviation:  J South Orthop Assoc     Publication Date:  1999  
Date Detail:
Created Date:  2002-07-22     Completed Date:  2002-08-06     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  9211289     Medline TA:  J South Orthop Assoc     Country:  United States    
Other Details:
Languages:  eng     Pagination:  261-8     Citation Subset:  IM    
Affiliation:
Department of Biomedical Engineering, University of Alabama at Birmingham, 35294-3295, USA.
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MeSH Terms
Descriptor/Qualifier:
Aged
Cadaver
Humans
Kyphosis / physiopathology*,  surgery
Lordosis / physiopathology*,  surgery
Lumbar Vertebrae / physiopathology*,  surgery
Middle Aged
Range of Motion, Articular
Rotation
Spinal Fusion / methods
Stress, Mechanical
Weight-Bearing

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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