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Peer-reviewed veterinary case report

Atlanto-axial malformation in an adult Quarter horse gelding.

Journal:
The Canadian veterinary journal = La revue veterinaire canadienne
Year:
2017
Authors:
Cole, Robert et al.
Affiliation:
Auburn University · United States
Species:
horse

Plain-English summary

A male Quarter horse gelding, who is an adult, was seen for a problem with his front legs that made him limp on both sides for about two years. During the examination, the vet noticed that he had some issues with coordination and movement, but his brain and nerve functions were normal. X-rays and a detailed examination after death revealed a new type of malformation in the area where the first two neck vertebrae meet, which might have been present since birth.

Abstract

An adult gelding was evaluated for bilateral intermittent forelimb lameness of approximately 2 years duration. The horse was found to have grade 2/5 upper motor neuron-general proprioception ataxia with no cranial nerve deficits. During radiographic and gross necropsy examinations a novel atlanto-axial malformation of possible congenital etiology was found.

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Original publication: https://pubmed.ncbi.nlm.nih.gov/28878414/