Design and biomechanical testing of pedicle screw for osteoporotic incidents

Proceedings of the Institution of Mechanical Engineers. Part H, Journal of Engineering in Medicine
Teyfik DemirKudret Türeyen

Abstract

In this study, geometrical features of pedicle screws have been modified and their performances are compared. Performance analysis has been made in terms of pull-out strength and torsional strength. The parameters investigated are core diameter, holes drilled normal to screw axis, angle between sequential holes and distance between holes. Three different core diameter have been studied, which are 4 mm (normal core diameter), 5 mm (medium core diameter) and 5.5 mm (high core diameter). Distance between sequential holes has been arranged such that there is either one hole per pitch or one hole per two pitches. Angle between sequential holes is either 90 degrees or 120 degrees. According to the test results, the screw, with medium core diameter (5 mm) containing one hole per two pitches with 90 degrees angle between sequential holes, has exhibited the optimum performance considering torsional strength and pull-out strength requirements. Its torsional strength is slightly higher than and, when Grade 40 polyurethane foam was used as bone simulating material, its pull-out strength is as good as, an undrilled normal core diameter screw, which is already being used in surgical operations. The fatigue performance of this best performed ...Continue Reading

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Citations

Jan 18, 2017·Proceedings of the Institution of Mechanical Engineers. Part H, Journal of Engineering in Medicine·Luigi La Barbera, Tomaso Villa
Oct 17, 2014·Proceedings of the Institution of Mechanical Engineers. Part H, Journal of Engineering in Medicine·Luigi La BarberaHans-Joachim Wilke
Oct 28, 2015·Proceedings of the Institution of Mechanical Engineers. Part H, Journal of Engineering in Medicine·Tolga TolunayArslan K Arslan
May 21, 2015·Proceedings of the Institution of Mechanical Engineers. Part H, Journal of Engineering in Medicine·Teyfik Demir
Feb 27, 2019·Clinical Spine Surgery : a Spine Publication·Nathan WandermanBrett Freedman
Jun 4, 2019·Asian Spine Journal·Ravi KhatriHarvinder Singh Chhabra
Jan 9, 2020·Computer Methods in Biomechanics and Biomedical Engineering·Jonas WidmerMazda Farshad
Dec 12, 2017·Computer Methods in Biomechanics and Biomedical Engineering·Maxim Van den AbbeeleWafa Skalli
Mar 22, 2013·Proceedings of the Institution of Mechanical Engineers. Part H, Journal of Engineering in Medicine·Arslan K ArslanKudret Türeyen
Aug 1, 2018·Asian Spine Journal·Vicky VargheseGurunathan Saravana Kumar
Jul 31, 2019·Geriatric Orthopaedic Surgery & Rehabilitation·Bayard C CarlsonPaul A Anderson
Aug 23, 2019·Spine Surgery and Related Research·Tetsuro OhbaHirotaka Haro
Oct 17, 2021·European Spine Journal : Official Publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society·Kunal VarshneyaAnand Veeravagu

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Methods Mentioned

BETA
pull-out

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