Adnan A Faraj1, Asheem Naraen, Peter Twigg. 1. Airedale General Hospital, Department of Orthopaedics, Skipton Road, Keighley, West Yorkshire BD20 6TD, and Medical Engineering Department, Biomechanical Laboratory, University of Bradford, United Kingdom. shevanfaraj@hotmail.com
Abstract
BACKGROUND: Arthrodesis of the great toe metatarsophalangeal joint for osteoarthritis usually involves internal fixation. Ideally, the fixation method should be reproducible, leading to a high rate of fusion and minimal complications. METHODS: This biomechanical study compares circumferential wire and screw fixation methods of arthrodesis. RESULTS: The two arthrodesis models have remarkably similar limits of elastic and plastic deformation. However, in the screw, failure by permanent deformation occurs at a load six times higher than the wire. CONCLUSIONS: The use of circumferential wire fixation for osteoporotic bones in which screw purchase is poor is reasonable and for quality bone, screw fixation may be preferable.
BACKGROUND: Arthrodesis of the great toe metatarsophalangeal joint for osteoarthritis usually involves internal fixation. Ideally, the fixation method should be reproducible, leading to a high rate of fusion and minimal complications. METHODS: This biomechanical study compares circumferential wire and screw fixation methods of arthrodesis. RESULTS: The two arthrodesis models have remarkably similar limits of elastic and plastic deformation. However, in the screw, failure by permanent deformation occurs at a load six times higher than the wire. CONCLUSIONS: The use of circumferential wire fixation for osteoporotic bones in which screw purchase is poor is reasonable and for quality bone, screw fixation may be preferable.
Authors: Leif Claassen; Christian Plaass; Marc-Frederic Pastor; Sarah Ettinger; Mathias Wellmann; Christina Stukenborg-Colsman; Sayyed Hadi Sayyed Hosseinian; Hazibullah Waizy Journal: Arch Bone Jt Surg Date: 2017-07