Please use this identifier to cite or link to this item: https://hdl.handle.net/20.500.11851/1531
Title: The Comparison of Pullout Strengths of Various Pedicle Screw Designs on Synthetic Foams and Ovine Vertebrae
Authors: Yaman, Onur
Demir, Teyfik
Arslan, Arslan Kağan
İyidiker, Mehmet Akif
Tolunay, Tolga
Camuşcu, Necip
Ulutaş, Murat
144123
Keywords: Pedicle screw
Dual lead
Dual thread
Issue Date: Jul-2015
Publisher: Turkish Neurosurgical Soc
Source: Yaman, O., Demir, T., Arslan, A. K., Iyidiker, M. A., Tolunay, T., Camuscu, N., & Ulutas, M. (2015). The Comparison of Pullout Strengths of Various Pedicle Screw Designs on Synthetic Foams and Ovine Vertebrae. Turkish neurosurgery, 25(4), 532-238.
Abstract: AIM: One of the most common problems with transpedicular screws is screw pullout. This study was conducted to measure the pullout strengths of newly designed transpedicular screws. MATERIAL and METHODS: The design of the three group screws were conical cored standard pedicle screw (Type A), dual threaded pedicle screw (Type B), dual core and dual threaded pedicle screw (Type C), respectively. Polyurethane (PU) blocks in 25 mm and 50 mm thickness were used to investigate the effect of just the pedicle on pullout strength and both distal (vertebral body) and proximal (pedicle) parts of the screw. The screws were also tested in ovine lumbar vertebrae. RESULTS: Type C screw exhibited 5.9% and 12.9% higher pullout strength than Type A and Type B, and 15.4% and 8.6% higher pullout strength than Type A and Type B, respectively on 25 mm and 50 mm thick PU foam block.Type C also exhibited 74.5% and 22.5% higher pullout strength than Type A and Type B, respectively on the ovine vertebrae. CONCLUSION: Transpedicular screws redesigned with modified helical angles exhibit higher pullout strength compared to the classical transpedicular screws and can be inserted more rapidly with the same number of screwing rounds result with doubled insertion depth.
URI: https://search.trdizin.gov.tr/yayin/detay/243308
https://www.ncbi.nlm.nih.gov/pubmed/26242328
https://hdl.handle.net/20.500.11851/1531
ISSN: 1019-5149
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
TR Dizin İndeksli Yayınlar / TR Dizin Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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