Os odontoideum: report of three cases

Journal of Clinical Neuroscience : Official Journal of the Neurosurgical Society of Australasia
J E Brecknell, G M Malham

Abstract

Os odontoideum is a condition in which a smoothly corticated ossicle exists dorsal to the anterior arch of C1, taking the place of the rostral dens, but with no bony connection to the body of the axis. Three patients presented with this condition: the first with Lhermitte's phenomenon 10 years after significant trauma, the second as an incidental finding during routine cervical spine imaging following a road traffic accident, and the third with recurrent transient quadriparesis precipitated by falls from a surfboard. Patients had at least 10 mm of sagittal instability on dynamic imaging and the second patient had a minimum sagittal canal diameter of only 11.5 mm. Posterior atlanto-axial fixation was successfully achieved in all cases using polyaxial screws and rods with the assistance of computed tomography-based image guidance. Image guidance provided an invaluable aid to preoperative planning and intraoperative placement of the posterior spinal instrumentation.

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Citations

Jul 15, 2009·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·Xiang WangZhen-Hua Liu
Dec 17, 2009·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·Chao Wang, Shenglin Wang
Apr 25, 2012·The Journal of Spinal Cord Medicine·Benjamin M ZussmanJames S Harrop
Mar 5, 2010·Neurosurgery·Babak ArvinMichael G Fehlings
Mar 30, 2013·Neurosurgery·Curtis J RozzelleMark N Hadley
Feb 3, 2011·Journal of Neurosurgery. Pediatrics·Corinna C ZygourakisMark R Proctor
Jan 26, 2016·World Neurosurgery·David White, Rafid Al-Mahfoudh
Oct 25, 2008·La Revue de médecine interne·A TavanoB Granel
Dec 17, 2014·PM & R : the Journal of Injury, Function, and Rehabilitation·Eric K HolderAdam E Flanders
May 15, 2010·Injury·Tony GoldschlagerGrego M Malham
Mar 5, 2015·Pediatric Emergency Care·Jie C Nguyen, Avrum N Pollock
Aug 9, 2019·The Journal of the American Academy of Orthopaedic Surgeons·Daniel J Hedequist, Andrew Z Mo
Jan 25, 2020·The Journal of the American Academy of Orthopaedic Surgeons·Daniel J Hedequist, Andrew Z Mo
Mar 28, 2017·Turkish Journal of Emergency Medicine·Idiris Altun, Kasim Zafer Yuksel

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