Estimating the compressive strength of the porcine cervical spine: an examination of the utility of DXA.
Identifieur interne : 000571 ( Ncbi/Merge ); précédent : 000570; suivant : 000572Estimating the compressive strength of the porcine cervical spine: an examination of the utility of DXA.
Auteurs : Robert J. Parkinson [Canada] ; Jennifer L. Durkin ; Jack P. CallaghanSource :
- Spine [ 1528-1159 ] ; 2005.
English descriptors
- KwdEn :
- MESH :
- diagnostic imaging : Cervical Vertebrae.
- metabolism : Cervical Vertebrae.
- physiology : Cervical Vertebrae.
- Absorptiometry, Photon, Animals, Bone Density, In Vitro Techniques, Models, Biological, Predictive Value of Tests, Reproducibility of Results, Swine, Weight-Bearing.
Abstract
The failure strength of porcine spinal units was correlated with vertebral size and bone mineralization. The accuracy of the resulting predictive equations was tested with an independent sample of spinal units.
PubMed: 16135971
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pubmed:16135971Le document en format XML
<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en">Estimating the compressive strength of the porcine cervical spine: an examination of the utility of DXA.</title><author><name sortKey="Parkinson, Robert J" sort="Parkinson, Robert J" uniqKey="Parkinson R" first="Robert J" last="Parkinson">Robert J. Parkinson</name><affiliation wicri:level="1"><nlm:affiliation>Department of Kinesiology, Faculty of Applied Health Sciences, University of Waterloo, Waterloo, Ontario, Canada.</nlm:affiliation><country xml:lang="fr">Canada</country><wicri:regionArea>Department of Kinesiology, Faculty of Applied Health Sciences, University of Waterloo, Waterloo, Ontario</wicri:regionArea><wicri:noRegion>Ontario</wicri:noRegion></affiliation></author><author><name sortKey="Durkin, Jennifer L" sort="Durkin, Jennifer L" uniqKey="Durkin J" first="Jennifer L" last="Durkin">Jennifer L. Durkin</name></author><author><name sortKey="Callaghan, Jack P" sort="Callaghan, Jack P" uniqKey="Callaghan J" first="Jack P" last="Callaghan">Jack P. Callaghan</name></author></titleStmt><publicationStmt><idno type="wicri:source">PubMed</idno><date when="2005">2005</date><idno type="RBID">pubmed:16135971</idno><idno type="pmid">16135971</idno><idno type="wicri:Area/PubMed/Corpus">001238</idno><idno type="wicri:explorRef" wicri:stream="PubMed" wicri:step="Corpus" wicri:corpus="PubMed">001238</idno><idno type="wicri:Area/PubMed/Curation">001238</idno><idno type="wicri:explorRef" wicri:stream="PubMed" wicri:step="Curation">001238</idno><idno type="wicri:Area/PubMed/Checkpoint">001238</idno><idno type="wicri:explorRef" wicri:stream="Checkpoint" wicri:step="PubMed">001238</idno><idno type="wicri:Area/Ncbi/Merge">000571</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en">Estimating the compressive strength of the porcine cervical spine: an examination of the utility of DXA.</title><author><name sortKey="Parkinson, Robert J" sort="Parkinson, Robert J" uniqKey="Parkinson R" first="Robert J" last="Parkinson">Robert J. Parkinson</name><affiliation wicri:level="1"><nlm:affiliation>Department of Kinesiology, Faculty of Applied Health Sciences, University of Waterloo, Waterloo, Ontario, Canada.</nlm:affiliation><country xml:lang="fr">Canada</country><wicri:regionArea>Department of Kinesiology, Faculty of Applied Health Sciences, University of Waterloo, Waterloo, Ontario</wicri:regionArea><wicri:noRegion>Ontario</wicri:noRegion></affiliation></author><author><name sortKey="Durkin, Jennifer L" sort="Durkin, Jennifer L" uniqKey="Durkin J" first="Jennifer L" last="Durkin">Jennifer L. Durkin</name></author><author><name sortKey="Callaghan, Jack P" sort="Callaghan, Jack P" uniqKey="Callaghan J" first="Jack P" last="Callaghan">Jack P. Callaghan</name></author></analytic><series><title level="j">Spine</title><idno type="eISSN">1528-1159</idno><imprint><date when="2005" type="published">2005</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Absorptiometry, Photon</term><term>Animals</term><term>Bone Density</term><term>Cervical Vertebrae (diagnostic imaging)</term><term>Cervical Vertebrae (metabolism)</term><term>Cervical Vertebrae (physiology)</term><term>In Vitro Techniques</term><term>Models, Biological</term><term>Predictive Value of Tests</term><term>Reproducibility of Results</term><term>Swine</term><term>Weight-Bearing</term></keywords><keywords scheme="MESH" qualifier="diagnostic imaging" xml:lang="en"><term>Cervical Vertebrae</term></keywords><keywords scheme="MESH" qualifier="metabolism" xml:lang="en"><term>Cervical Vertebrae</term></keywords><keywords scheme="MESH" qualifier="physiology" xml:lang="en"><term>Cervical Vertebrae</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Absorptiometry, Photon</term><term>Animals</term><term>Bone Density</term><term>In Vitro Techniques</term><term>Models, Biological</term><term>Predictive Value of Tests</term><term>Reproducibility of Results</term><term>Swine</term><term>Weight-Bearing</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">The failure strength of porcine spinal units was correlated with vertebral size and bone mineralization. The accuracy of the resulting predictive equations was tested with an independent sample of spinal units.</div></front></TEI><pubmed><MedlineCitation Status="MEDLINE" Owner="NLM"><PMID Version="1">16135971</PMID><DateCreated><Year>2005</Year><Month>09</Month><Day>01</Day></DateCreated><DateCompleted><Year>2006</Year><Month>03</Month><Day>24</Day></DateCompleted><DateRevised><Year>2016</Year><Month>11</Month><Day>24</Day></DateRevised><Article PubModel="Print"><Journal><ISSN IssnType="Electronic">1528-1159</ISSN><JournalIssue CitedMedium="Internet"><Volume>30</Volume><Issue>17</Issue><PubDate><Year>2005</Year><Month>Sep</Month><Day>01</Day></PubDate></JournalIssue><Title>Spine</Title><ISOAbbreviation>Spine</ISOAbbreviation></Journal><ArticleTitle>Estimating the compressive strength of the porcine cervical spine: an examination of the utility of DXA.</ArticleTitle><Pagination><MedlinePgn>E492-8</MedlinePgn></Pagination><Abstract><AbstractText Label="STUDY DESIGN" NlmCategory="METHODS">The failure strength of porcine spinal units was correlated with vertebral size and bone mineralization. The accuracy of the resulting predictive equations was tested with an independent sample of spinal units.</AbstractText><AbstractText Label="OBJECTIVES" NlmCategory="OBJECTIVE">To determine if dual energy x-ray absorptiometry (DXA)-obtained measures of bone mineralization can be used to accurately predict the compressive tolerance of porcine spinal units.</AbstractText><AbstractText Label="SUMMARY OF BACKGROUND DATA" NlmCategory="BACKGROUND">Porcine spinal units are often used in place of cadaveric tissues, and normalization is used to improve the transferability of model results. In compressive testing, normalization can be performed to the estimated compressive strength. Bone mineralization measures have been shown to be positively correlated with compressive tolerance and have been used to predict the tolerance of human spinal units. However, the accuracy of these predictive equations has not been assessed with an independent sample.</AbstractText><AbstractText Label="METHODS" NlmCategory="METHODS">Twenty porcine cervical spinal units were scanned (DXA) to obtain measures of bone mineral content (BMC) and bone mineral density (BMD). The units were compressed to failure, and the failure loads were correlated with the measured bone mineralization and endplate area of the spinal unit. The regression equations were used to predict the compressive tolerance of an independent sample of spinal units.</AbstractText><AbstractText Label="RESULTS" NlmCategory="RESULTS">BMC (P = 0.078) and BMD (P = 0.2834) were not significantly correlated to compressive strength. Endplate area was the most highly correlated variable, with an r of 0.5329. The use of a predictive equation including BMC on the second independent sample resulted in errors of estimation of 1.4 +/- 1.2 kN, corresponding to 13% of the average compressive strength. In comparison, the use of an equation employing endplate area alone resulted in estimation errors of 11%.</AbstractText><AbstractText Label="CONCLUSIONS" NlmCategory="CONCLUSIONS">Measures of BMC/BMD did not enhance predictions of compressive strength and will not reduce errors in compressive load normalization in a porcine model. The poor correlations found between BMC and compressive strength may be due to the non-load-bearing anterior processes of the porcine cervical spine.</AbstractText></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Parkinson</LastName><ForeName>Robert J</ForeName><Initials>RJ</Initials><AffiliationInfo><Affiliation>Department of Kinesiology, Faculty of Applied Health Sciences, University of Waterloo, Waterloo, Ontario, Canada.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Durkin</LastName><ForeName>Jennifer L</ForeName><Initials>JL</Initials></Author><Author ValidYN="Y"><LastName>Callaghan</LastName><ForeName>Jack P</ForeName><Initials>JP</Initials></Author></AuthorList><Language>eng</Language><PublicationTypeList><PublicationType UI="D016428">Journal Article</PublicationType><PublicationType UI="D013485">Research Support, Non-U.S. Gov't</PublicationType></PublicationTypeList></Article><MedlineJournalInfo><Country>United States</Country><MedlineTA>Spine (Phila Pa 1976)</MedlineTA><NlmUniqueID>7610646</NlmUniqueID><ISSNLinking>0362-2436</ISSNLinking></MedlineJournalInfo><CitationSubset>IM</CitationSubset><MeshHeadingList><MeshHeading><DescriptorName UI="D015502" MajorTopicYN="Y">Absorptiometry, Photon</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D000818" MajorTopicYN="N">Animals</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D015519" MajorTopicYN="N">Bone Density</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D002574" MajorTopicYN="N">Cervical Vertebrae</DescriptorName><QualifierName UI="Q000000981" MajorTopicYN="Y">diagnostic imaging</QualifierName><QualifierName UI="Q000378" MajorTopicYN="N">metabolism</QualifierName><QualifierName UI="Q000502" MajorTopicYN="Y">physiology</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D066298" MajorTopicYN="N">In Vitro Techniques</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D008954" MajorTopicYN="N">Models, Biological</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D011237" MajorTopicYN="N">Predictive Value of Tests</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D015203" MajorTopicYN="N">Reproducibility of Results</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D013552" MajorTopicYN="N">Swine</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D016474" MajorTopicYN="Y">Weight-Bearing</DescriptorName></MeshHeading></MeshHeadingList></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="pubmed"><Year>2005</Year><Month>9</Month><Day>2</Day><Hour>9</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>2006</Year><Month>3</Month><Day>25</Day><Hour>9</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="entrez"><Year>2005</Year><Month>9</Month><Day>2</Day><Hour>9</Hour><Minute>0</Minute></PubMedPubDate></History><PublicationStatus>ppublish</PublicationStatus><ArticleIdList><ArticleId IdType="pubmed">16135971</ArticleId><ArticleId IdType="pii">00007632-200509010-00017</ArticleId></ArticleIdList></PubmedData></pubmed><affiliations><list><country><li>Canada</li></country></list><tree><noCountry><name sortKey="Callaghan, Jack P" sort="Callaghan, Jack P" uniqKey="Callaghan J" first="Jack P" last="Callaghan">Jack P. Callaghan</name><name sortKey="Durkin, Jennifer L" sort="Durkin, Jennifer L" uniqKey="Durkin J" first="Jennifer L" last="Durkin">Jennifer L. Durkin</name></noCountry><country name="Canada"><noRegion><name sortKey="Parkinson, Robert J" sort="Parkinson, Robert J" uniqKey="Parkinson R" first="Robert J" last="Parkinson">Robert J. Parkinson</name></noRegion></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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