Document Detail

Mechanical behavior of the human lumbar and lumbosacral spine as shown by three-dimensional load-displacement curves.
MedLine Citation:
PMID:  8126047     Owner:  NLM     Status:  MEDLINE    
The lumbar region is a frequent site of spinal disorders, including low-back pain, and of spinal trauma. Clinical studies have established that abnormal intervertebral motions occur in some patients who have low-back pain. A knowledge of normal spinal movements, with all of the inherent complexities, is needed as a baseline. The present study documents the complete three-dimensional elastic physical properties of each lumbar intervertebral level from the level between the first and second lumbar vertebrae through the level between the fifth lumbar and first sacral vertebrae. Nine whole fresh-frozen human cadaveric lumbar-spine specimens were used. Pure moments of flexion-extension, bilateral axial torque, and bilateral lateral bending were applied, and three-dimensional intervertebral motions were determined with use of stereophotogrammetry. The motions were presented in the form of a set of six load-displacement curves, quantitating intervertebral rotations and translations. The curves were found to be non-linear, and the motions were coupled. The ranges of motion were found to compare favorably with reported values from in vivo studies.
M M Panjabi; T R Oxland; I Yamamoto; J J Crisco
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Publication Detail:
Type:  Journal Article; Research Support, U.S. Gov't, P.H.S.    
Journal Detail:
Title:  The Journal of bone and joint surgery. American volume     Volume:  76     ISSN:  0021-9355     ISO Abbreviation:  J Bone Joint Surg Am     Publication Date:  1994 Mar 
Date Detail:
Created Date:  1994-04-08     Completed Date:  1994-04-08     Revised Date:  2010-10-25    
Medline Journal Info:
Nlm Unique ID:  0014030     Medline TA:  J Bone Joint Surg Am     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  413-24     Citation Subset:  AIM; IM; S    
Department of Orthopaedics and Rehabilitation, Yale University School of Medicine, New Haven, Connecticut 06510.
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MeSH Terms
Analysis of Variance
Intervertebral Disk / physiology
Lumbar Vertebrae / physiology*
Middle Aged
Reproducibility of Results
Sacrum / physiology*
Grant Support

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