Screw design alters the effects of stress relaxation on pullout

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dc.authoridInceoglu, Serkan/0000-0001-7605-8987
dc.authorwosidKILINÇER, Cumhur/C-7969-2014
dc.authorwosidInceoglu, Serkan/B-9700-2015
dc.contributor.authorInceoglu, Serkan
dc.contributor.authorKilincer, Cumhur
dc.contributor.authorMcLain, Robert F.
dc.date.accessioned2024-06-12T11:12:10Z
dc.date.available2024-06-12T11:12:10Z
dc.date.issued2008
dc.departmentTrakya Üniversitesien_US
dc.description.abstractStress relaxation during pullout of a pedicle screw decreases the peak load and stiffness of the bone-screw interface. However, it is unknown whether this can be generalized to all types of screw designs. This study aimed to show whether screw design altered the effects of stress relaxation on the mechanical performance of the pedicle screw during pullout. Twelve calf vertebrae were obtained: six vertebrae were instrumented with 7.5 x 40 mm conical pedicle screws and the other six with 5.0 x 40 mm cylindrical pedicle screws. The screws with two different designs were pulled out using either a standard pullout or a stress relaxation pullout protocol. Both bone-screw interfaces had lower stiffness in the stress relaxation pullout model than in the standard pullout model, but it was significant in only the cylindrical design group (P < 0.05). However, the stress relaxation and standard pullout models did not yield any difference in peak loads in either screw type. Although stress relaxation at the bone-screw interface can alter the mechanical performance of the screw, this may be eliminated by modifying the screw design. A better understanding of viscoelastic properties of the bone-screw interface may help improve implant design and thus, clinical outcomes.en_US
dc.identifier.doi10.3233/BME-2008-0508
dc.identifier.endpage60en_US
dc.identifier.issn0959-2989
dc.identifier.issue2en_US
dc.identifier.pmid18408256en_US
dc.identifier.scopus2-s2.0-46649120903en_US
dc.identifier.scopusqualityQ4en_US
dc.identifier.startpage53en_US
dc.identifier.urihttps://doi.org/10.3233/BME-2008-0508
dc.identifier.urihttps://hdl.handle.net/20.500.14551/23073
dc.identifier.volume18en_US
dc.identifier.wosWOS:000256526400001en_US
dc.identifier.wosqualityQ4en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.indekslendigikaynakPubMeden_US
dc.language.isoenen_US
dc.publisherIos Pressen_US
dc.relation.ispartofBio-Medical Materials And Engineeringen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectPedicleen_US
dc.subjectPedicle Screwen_US
dc.subjectPullouten_US
dc.subjectStress Relaxationen_US
dc.subjectViscoelasticityen_US
dc.subjectSpineen_US
dc.subjectPedicle Screwsen_US
dc.subjectViscoelastic Propertiesen_US
dc.subjectTrabecular Boneen_US
dc.subjectCortical Boneen_US
dc.subjectFixationen_US
dc.subjectInterfaceen_US
dc.subjectStrengthen_US
dc.subjectBehavioren_US
dc.subjectTorqueen_US
dc.subjectSpineen_US
dc.titleScrew design alters the effects of stress relaxation on pullouten_US
dc.typeArticleen_US

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