Departmental Bulletin Paper Surgical stabilization of the atlanto-occipital overlap with atlanto-axial instability in a dog

Fujita, Atsushi  ,  Nishimura, Ryohei

64 ( 2 )  , pp.141 - 145 , 2016-05 , Graduate School of Veterinary Medicine, Hokkaido University
ISSN:0047-1917
NCID:AA0069128X
Description
The atlanto-occipital (AO) overlap in combination with atlanto-axial (AA) instability was found in a dog. We hypothesized that ventral fixation of the AA junction can stabilize the atlas and prevent AO overlap by reviewing our past cases with AA instability. A standard ventral fixation of the AA junction using stainless k-wires and polymethyl methacrylate (PMMA) was performed. The dog fully recovered, and no complication was noted. The results of the postoperative CT imaging supported our hypothesis. The ventral fixation of the AA junction is a feasible treatment option for similar cases, although craniocervical junction abnormalities (CJA) including AA instability are varied, and careful consideration is required for each case.
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