dc.creatorFAKHOURI, Sarah Fakher
dc.creatorSIQUEIRA, Dayana Pousa Paiva de
dc.creatorARAUJO, Cleudmar Amaral de
dc.creatorDEFINO, Helton Luiz Aparecido
dc.creatorSHIMANO, Antonio Carlos
dc.date.accessioned2012-10-19T22:43:57Z
dc.date.accessioned2018-07-04T15:14:23Z
dc.date.available2012-10-19T22:43:57Z
dc.date.available2018-07-04T15:14:23Z
dc.date.created2012-10-19T22:43:57Z
dc.date.issued2009
dc.identifierActa Ortopédica Brasileira, v.17, n.4, p.207-210, 2009
dc.identifier1413-7852
dc.identifierhttp://producao.usp.br/handle/BDPI/23718
dc.identifierhttp://apps.isiknowledge.com/InboundService.do?Func=Frame&product=WOS&action=retrieve&SrcApp=EndNote&UT=000269373000002&Init=Yes&SrcAuth=ResearchSoft&mode=FullRecord
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1620446
dc.description.abstractIntroduction: The photoelasticity is used for assessing the tensions/deformations involved in photoelastic materials when submitted to a given load by the observation of optical effects. The screw performance and mechanical functions are directly associated to the quality of the screws fixation in the vertebrae. Photoelasticity is an important tool to perform comparative studies of this nature. Objective: The aim of this study was to compare, by using photoelasticity, internal stresses produced by the screw with an external diameter of 6 mm, when submitted to two different pullout strengths. Materials and Methods: For this, four photoelastic models were produced. The simulation was conducted by using two pullout strengths: 0.75 and 1.50 kgf. The maximum shear stresses were calculated on 19 points around the screws, using the Tardy compensation method. Results:The values of maximum shear stress were higher with the load of 1.50 kgf. Conclusion: Thus, the screw will be more susceptible to pullout when heavier loads are applied. According to our analysis, we also found that the site with the highest maximum shear stress was found to be at the peak of creast, particularly near the tips of the screws, regardless of the load employed.
dc.languageeng
dc.publisherATHA COMUNICACAO & EDITORA
dc.relationActa Ortopédica Brasileira
dc.rightsCopyright ATHA COMUNICACAO & EDITORA
dc.rightsclosedAccess
dc.subjectBiomechanics
dc.subjectScrew
dc.subjectResin
dc.titleTHE PHOTOELASTIC ANALISYS OF VERTEBRAL FIXATION SYSTEM SCREWS
dc.typeArtículos de revistas


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