The expansion behavior of human lumbar pedicle cortex

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dc.authorscopusid6602451080
dc.authorscopusid9248618100
dc.authorscopusid6701453146
dc.authorscopusid57214957902
dc.contributor.authorInceo?lu S.
dc.contributor.authorKilinçer C.
dc.contributor.authorTami A.
dc.contributor.authorMcLain R.
dc.date.accessioned2024-06-12T10:29:30Z
dc.date.available2024-06-12T10:29:30Z
dc.date.issued2006
dc.descriptionSEM Annual Conference and Exposition on Experimental and Applied Mechanics 2006 -- 4 June 2006 through 7 June 2006 -- Saint Louis, MO -- 68397en_US
dc.description.abstractPedicle screws are commonly used to provide support for a fractured spine during healing process. However, neither the microstructure of pedicle nor the maximum screw size that will not cause any fracture at the pedicle is clearly known. Four human lumbar vertebral specimens yielding eight pedicles were obtained. Two linear strain gauges were circumferentially affixed to the lateral and medial surfaces. 6.5×45mm and 7.5×40mm pedicle screws were sequentially placed into each pedicle and removed carefully. Lateral and medial cortices of several intact lumbar pedicles were sectioned and images of cortex cross-sections were analyzed under microscope. Deformations at the cortices produced during screw insertion could not be restored after removal although no visible fracture was detected. Strain levels producing plastic deformation in the pedicle cortex were different from those reported for femoral cortical bone. The image analyses showed that the pedicle cortex had an osteonal structure. However, no surrounding lamellar bone was observed at the periosteum. Our results suggested that screw insertion into the pedicle caused plastic deformation although the screws did not contact the cortex. The structure and mechanical properties of the pedicle cortex seemed to be different from those of other cortical bones in human body.en_US
dc.identifier.endpage219en_US
dc.identifier.isbn091205395X
dc.identifier.isbn9780912053950
dc.identifier.scopus2-s2.0-33750304271en_US
dc.identifier.scopusqualityN/Aen_US
dc.identifier.startpage214en_US
dc.identifier.urihttps://hdl.handle.net/20.500.14551/17772
dc.identifier.volume1en_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherSociety for Experimental Mechanics Inc.en_US
dc.relation.ispartofProceedings of the 2006 SEM Annual Conference and Exposition on Experimental and Applied Mechanics 2006en_US
dc.relation.publicationcategoryKonferans Öğesi - Uluslararası - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectFracture; Image Analysis; Microscopic Examination; Microstructure; Plastic Deformation; Strain; Strain Gages; Cortical Bones; Pedicle Cortex; Periosteum; Screw Size; Aluminum Alloysen_US
dc.titleThe expansion behavior of human lumbar pedicle cortexen_US
dc.typeConference Objecten_US

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