Document Detail


Effect of immobilization and configuration on lumbar adjacent-segment biomechanics.
MedLine Citation:
PMID:  8504234     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The motion and facet load changes at the adjacent segment after lumbosacral immobilization (with different angles) were quantified in vitro using canine spines. Changes were examined under flexion, extension, and lateral bending. An increase (extension: 62%; flexion: 85%; left bend: 30%; right bend 26%) in motion at the adjacent segment was found for all motions after immobilization. Adjacent-segment facet load remained constant under any load state or immobilized configuration. For all configurations, the facet contact site impinged in extension, remained unchanged in left bending, and moved superiorly in right bending. This study has shown that after immobilization the facet contact patterns at the adjacent segment changed, load was unchanged, and segmental motion increased when the lumbar spine reproduced the same range of motion. The configuration of the immobilized segments had no effect on these changes.
Authors:
K Y Ha; M J Schendel; J L Lewis; J W Ogilvie
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, P.H.S.    
Journal Detail:
Title:  Journal of spinal disorders     Volume:  6     ISSN:  0895-0385     ISO Abbreviation:  J Spinal Disord     Publication Date:  1993 Apr 
Date Detail:
Created Date:  1993-07-02     Completed Date:  1993-07-02     Revised Date:  2007-11-14    
Medline Journal Info:
Nlm Unique ID:  8904842     Medline TA:  J Spinal Disord     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  99-105     Citation Subset:  IM; S    
Affiliation:
Department of Orthopaedic Surgery, Catholic University Medical College, Kang-Nam St. Mary's Hospital, Seoul, Korea.
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MeSH Terms
Descriptor/Qualifier:
Animals
Biomechanics
Dogs
Immobilization*
Lumbar Vertebrae / surgery*
Spinal Fusion*
Spine / physiology*
Grant Support
ID/Acronym/Agency:
AR39255/AR/NIAMS NIH HHS

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


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