Document Detail


Posterior annular strains during discography.
MedLine Citation:
PMID:  11481559     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Discography is commonly used in the workup of back disorders. The clinical utility of the test is controversial, and little is known about mechanical changes that may occur in the disc during this exam. To quantify three-dimensional deformations of the posterior annulus during discography, and to examine some of the covariates that influence the deformations, displacements of the lumbar posterior annulus were measured during discographic injection for three different spinal positions. Disc bulge and annular strains were calculated from the displacements. The combined effect of disc pressurization, spine position, and location on the disc (lateral versus midline) explained much of the variation in the measured bulges and strains (r(2) = 0.56). Disc pressurization or spine position alone did not always have a significant effect on strains, and the strains and bulges were often influenced by the interactions between position of the spine, location of the disc, and pressurization. In clinical studies of discography, these results suggest that patient position during the examination should be standardized.
Authors:
C A Reitman; J A Hipp; B C Kirking; S Haas; S I Esses
Related Documents :
18596639 - Effects of prone position and positive end-expiratory pressure on lung perfusion and ve...
23599139 - A computational study of the factors influencing pressure 
in arteriovenous fistulae ve...
21908989 - The lund concept for the treatment of patients with severe traumatic brain injury.
21253519 - Obesity hypertension: the regulatory role of leptin.
21801579 - The mechanical ventilator: past, present, and future.
1610579 - The effect of the prone position on venous pressure and blood loss during lumbar lamine...
19880539 - Influence of dietary sodium on the blood pressure and renal sympathetic nerve activity ...
16771919 - Flow-dependent resistance of nasal masks used for non-invasive positive pressure ventil...
6985759 - The effect of thrombocytopenia on the pulmonary and systemic hemodynamics of canine end...
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Journal of spinal disorders     Volume:  14     ISSN:  0895-0385     ISO Abbreviation:  J Spinal Disord     Publication Date:  2001 Aug 
Date Detail:
Created Date:  2001-08-01     Completed Date:  2001-09-13     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  8904842     Medline TA:  J Spinal Disord     Country:  United States    
Other Details:
Languages:  eng     Pagination:  347-52     Citation Subset:  IM    
Affiliation:
Department of Orthopedic Surgery, Baylor College of Medicine, Houston, Texas 77030, USA.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Descriptor/Qualifier:
Adult
Aged
Aged, 80 and over
Female
Humans
Intervertebral Disk / radiography*
Lumbar Vertebrae / radiography*
Male
Middle Aged
Movement / physiology
Posture / physiology
Pressure
Spine / physiopathology*
Stress, Mechanical
Tomography, X-Ray Computed

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


Previous Document:  Blood flow measurement in experimental chronic cauda equina compression in dogs: changes in blood fl...
Next Document:  Intradiscal electrothermal annuloplasty: the IDET procedure.