Please use this identifier to cite or link to this item: https://hdl.handle.net/20.500.11851/7294
Title: Postfusion pullout strength comparison of a novel pedicle screw with classical pedicle screws on synthetic foams
Authors: Arslan, Arslan K.
Demir, Teyfik
Örmeci, Mehmet F.
Camuşcu, Necip
Tureyen, Kudret
Keywords: Pedicle screw
pullout
osteoporosis
synthetic foam
postfusion
Issue Date: 2013
Publisher: Sage Publications Ltd
Abstract: Pullout is a very common failure mode on the use of pedicle screws. Numerous studies were completed to increase the pullout strength of pedicle screws especially for osteoporotic bones. In this study, a previously designed pedicle screw type was tested before and after fusion condition. Synthetic polyurethane foams were used in all tests. Three different grades of foams were used in tests to simulate severely osteoporotic, osteoporotic, and healthy bones. Test blocks were produced and characterized in our clinical biomechanics laboratory. Foaming of polyurethane was accepted as fusion process (bone in growth). Pedicle screw including radial holes (new design) was tested both before and after the fusion. It also exhibited remarkably higher pullout strength after fusion than before fusion and most of other alternatives stated in the literature. In total, 70% higher pullout strength was achieved with new design after fusion. On the other hand, new design did not dominate other alternatives when comparison was carried out on severely osteoporotic and healthy bones. To the knowledge of the authors, this is the first study investigating the postfusion properties on synthetic foams.
URI: https://doi.org/10.1177/0954411912463323
https://hdl.handle.net/20.500.11851/7294
ISSN: 0954-4119
2041-3033
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

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