Please use this identifier to cite or link to this item: https://hdl.handle.net/20.500.11851/1532
Full metadata record
DC FieldValueLanguage
dc.contributor.authorDemir, Teyfik-
dc.date.accessioned2021-09-10T08:07:05Z-
dc.date.available2021-09-10T08:07:05Z-
dc.date.issued2015-05-
dc.identifier.citationDemir, T. (2015). A new alternative to expandable pedicle screws: Expandable poly-ether-ether-ketone shell. Proceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine, 229(5), 386-394.en_US
dc.identifier.issn0954-4119-
dc.identifier.urihttps://www.ncbi.nlm.nih.gov/pubmed/25991716-
dc.identifier.urihttps://hdl.handle.net/20.500.11851/1532-
dc.description.abstractScrew pullout is a very common problem in the fixation of sacrum with pedicle screws. The principal cause of this problem is that the cyclic micro motions in the fixation of sacrum are higher than the other regions of the vertebrae that limit the osteo-integration between bone and screw. In addition to that, the bone quality is very poor at sacrum region. This study investigated a possible solution to the pullout problem without the expandable screws' handicaps. Newly designed poly-ether-ether-ketone expandable shell and classical pedicle screws were biomechanically compared. Torsion test, pullout tests, fatigue tests, flexion/extension moment test, axial gripping capacity tests and torsional gripping capacity tests were conducted in accordance with ASTM F543, F1798 and F1717. Standard polyurethane foam and calf vertebrae were used as embedding medium for pullout tests. Classical pedicle screw pullout load on polyurethane foam was 564.8N compared to the failure load for calf vertebrae's 1264N. Under the same test conditions, expandable poly-ether-ether-ketone shell system's pullout loads from polyurethane foam and calf vertebrae were 1196.3 and 1890N, respectively. The pullout values for expandable poly-ether-ether-ketone shell were 33% and 53% higher than classical pedicle screw on polyurethane foam and calf vertebrae, respectively. The expandable poly-ether-ether-ketone shell exhibited endurance on its 90% of yield load. Contrary to poly-ether-ether-ketone shell, classical pedicle screw exhibited endurance on 70% of its yield load. Expandable poly-ether-ether-ketone shell exhibited much higher pullout performance than classical pedicle screw. Fatigue performance of expandable poly-ether-ether-ketone shell is also higher than classical pedicle screw due to damping the micro motion capacity of the poly-ether-ether-ketone. Expandable poly-ether-ether-ketone shell is a safe alternative to all other expandable pedicle screw systems on mechanical perspective.en_US
dc.description.sponsorshipThe author acknowledges Turkish Science Foundation (TUBITAK) for the financial support for the study with project number 111M583.-
dc.language.isoenen_US
dc.publisherSage Publications Ltden_US
dc.relation.ispartofProceedings Of The Institution Of Mechanical Engineers Part H-Journal Of Engineering In Medicineen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectPedicle screwen_US
dc.subjectpullouten_US
dc.subjectexpandable poly-ether-ether-ketone shell and fatigueen_US
dc.titleA new alternative to expandable pedicle screws: Expandable poly-ether-ether-ketone shellen_US
dc.typeArticleen_US
dc.departmentFaculties, Faculty of Engineering, Department of Mechanical Engineeringen_US
dc.departmentFakülteler, Mühendislik Fakültesi, Makine Mühendisliği Bölümütr_TR
dc.identifier.volume229-
dc.identifier.issue5-
dc.identifier.startpage386-
dc.identifier.endpage394-
dc.relation.tubitakTurkish Science Foundation (TUBITAK) [111M583]en_US
dc.authorid0000-0001-6352-8302-
dc.identifier.wosWOS:000354850800006en_US
dc.identifier.scopus2-s2.0-84930442867en_US
dc.institutionauthorDemir, Teyfik-
dc.identifier.pmid25991716en_US
dc.identifier.doi10.1177/0954411915584430-
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.identifier.scopusqualityQ2-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
item.grantfulltextopen-
item.fulltextWith Fulltext-
item.openairetypeArticle-
item.cerifentitytypePublications-
item.languageiso639-1en-
Appears in Collections:Makine Mühendisliği Bölümü / Department of Mechanical Engineering
PubMed İndeksli Yayınlar Koleksiyonu / PubMed Indexed Publications Collection
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection
Files in This Item:
File SizeFormat 
demir2015.pdf1.92 MBAdobe PDFView/Open
Show simple item record



CORE Recommender

SCOPUSTM   
Citations

9
checked on Mar 23, 2024

WEB OF SCIENCETM
Citations

11
checked on Jan 20, 2024

Page view(s)

64
checked on Mar 25, 2024

Download(s)

54
checked on Mar 25, 2024

Google ScholarTM

Check




Altmetric


Items in GCRIS Repository are protected by copyright, with all rights reserved, unless otherwise indicated.