Familial congenital occipitoatlantoaxial malformation (OAAM) in the Arabian horse

Spine
A G Watson, Ian G Mayhew

Abstract

Familial occipitalization of the atlas with atlantalization of the axis was defined as a single congenital disease in Arabian horses following a clinical, radiologic, and morphologic study of 16 horses with congenital malformations of the occiput, atlas, and axis, and from a study of three reported cases. The constant morphologic features were interpreted as congenital atlantooccipital fusion, hypoplasia of the atlas and dens, malformation of the axis, and modification of the atlantoaxial joint. Atlantoaxial subluxation was also a frequent finding. The clinical syndromes shown by these horses were variable but were broadly classified into four groups. Neurologic signs varied from symmetric ataxia, with hypometria and tetraparesis to tetraplegia. These often progressive clinical signs were due to a progressive and focal compressive myelopathy of the proximal cervical spinal cord. Pedigree analysis demonstrated the familial nature of this occipitoatlantoaxial malformation seen in horses of only the Arabian breed.

Citations

Jun 13, 2000·Veterinary Radiology & Ultrasound : the Official Journal of the American College of Veterinary Radiology and the International Veterinary Radiology Association·D S RosensteinR L Stickle
Sep 18, 2014·Journal of the American Veterinary Medical Association·Caroline S MonkBrent C Credille
Mar 15, 2011·Veterinary Surgery : VS·Eugenio Cillán-GarciaTheresia Licka
Nov 14, 2013·Veterinary Radiology & Ultrasound : the Official Journal of the American College of Veterinary Radiology and the International Veterinary Radiology Association·Beatriz Gutiérrez-CrespoInes Carrera
Jul 1, 1992·The Veterinary Clinics of North America. Small Animal Practice·C S Bailey, J P Morgan
Jul 21, 2016·Veterinary Radiology & Ultrasound : the Official Journal of the American College of Veterinary Radiology and the International Veterinary Radiology Association·Stefanie VeraaWillem Back
Sep 9, 2008·Journal of Veterinary Diagnostic Investigation : Official Publication of the American Association of Veterinary Laboratory Diagnosticians, Inc·Juan I SevaAntonio Bernabé
Jan 18, 2017·Veterinary and Comparative Orthopaedics and Traumatology : V.C.O.T·Franck ForterreAlexander Bürki
Jul 14, 2020·The Veterinary Clinics of North America. Equine Practice·Lisa Edwards, Carrie J Finno

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