Linked Life Data

18584219

Source:http://linkedlifedata.com/resource/pubmed/id/18584219

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
8
pubmed:dateCreated
2008-8-5
pubmed:abstractText
Interspinous implants are used to treat lumbar spinal stenosis or facet joint arthritis. The aims of implanting interspinous devices are to unload the facet joints, restore foraminal height and provide stability especially in extension but still allow motion. The aim of this in vitro study was to compare four different interspinous implants--Colfex, Wallis, Diam and X-Stop--in terms of their three-dimensional flexibility and the intradiscal pressure. Twenty-four human lumbar spine specimens were divided into four equal groups and tested with pure moments in flexion/extension, lateral bending and axial rotation: (1) intact, (2) defect, (3) after implantation. Range of motion and the intradiscal pressure were determined. In each implant-group the defect caused an increase in range of motion by about 8% in lateral bending to 18% in axial rotation. Implantation had similar effects with all four implants. In extension, Coflex, Wallis, Diam, and X-Stop all overcompensated the instability caused by the defect and allowed about 50% of the range of motion of the intact state. In contrast, in flexion, lateral bending and axial rotation the values of the range of motion stayed about the values of the defect state. Similarly the intradiscal pressure after implantation was similar to that of the intact specimens in flexion, lateral bending and axial rotation but much smaller during extension. All tested interspinous implants had a similar effect on the flexibility: they strongly stabilized and reduced the intradiscal pressure in extension, but had almost no effect in flexion, lateral bending and axial rotation.
pubmed:commentsCorrections
http://linkedlifedata.com/resource/pubmed/commentcorrection/18584219-10222525, http://linkedlifedata.com/resource/pubmed/commentcorrection/18584219-10685483, http://linkedlifedata.com/resource/pubmed/commentcorrection/18584219-10828926, http://linkedlifedata.com/resource/pubmed/commentcorrection/18584219-11052356, http://linkedlifedata.com/resource/pubmed/commentcorrection/18584219-12544951, http://linkedlifedata.com/resource/pubmed/commentcorrection/18584219-12902959, http://linkedlifedata.com/resource/pubmed/commentcorrection/18584219-12923484, http://linkedlifedata.com/resource/pubmed/commentcorrection/18584219-14520030, http://linkedlifedata.com/resource/pubmed/commentcorrection/18584219-1531550, http://linkedlifedata.com/resource/pubmed/commentcorrection/18584219-15834334, http://linkedlifedata.com/resource/pubmed/commentcorrection/18584219-16103838, http://linkedlifedata.com/resource/pubmed/commentcorrection/18584219-16133080, http://linkedlifedata.com/resource/pubmed/commentcorrection/18584219-16328226, http://linkedlifedata.com/resource/pubmed/commentcorrection/18584219-17721711, http://linkedlifedata.com/resource/pubmed/commentcorrection/18584219-3956001, http://linkedlifedata.com/resource/pubmed/commentcorrection/18584219-9280017, http://linkedlifedata.com/resource/pubmed/commentcorrection/18584219-9629939
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:status
MEDLINE
pubmed:month
Aug
pubmed:issn
1432-0932
pubmed:author
pubmed:issnType
Electronic
pubmed:volume
17
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
1049-56
pubmed:dateRevised
2011-11-17
pubmed:meshHeading
pubmed:year
2008
pubmed:articleTitle
Biomechanical effect of different lumbar interspinous implants on flexibility and intradiscal pressure.
pubmed:affiliation
Institute of Orthopaedic Research and Biomechanics (Director: L. Claes), University of Ulm, Helmholtzstrasse 14, 89081, Ulm, Germany. hans-joachim.wilke@uni-ulm.de
pubmed:publicationType
Journal Article, Comparative Study, In Vitro, Research Support, Non-U.S. Gov't