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Case Report


Craniocervical junction abnormalities with atlantoaxial subluxation caused by ventral subluxation of C2 in a dog

Harumichi Itoh, Kazuhito Itamoto, Shotaro Etoh, Tomoya Haraguchi, Shimpei Nishikawa, Kenji Tani, Yoshiki Itoh, Masato Hiyama, Toshie Iseri, Munekazu Nakaichi, Yasuho Taura.


Abstract
Craniocervical junction abnormalities with atlantoaxial subluxation caused by ventral subluxation of C2 were diagnosed in a 6-month-old female Pomeranian with tetraplegia as a clinical sign. Lateral survey radiography of the neck with flexion revealed atlantoaxial subluxation with ventral subluxation of C2. Computed tomography revealed absence of dens and atlanto-occipital overlapping. Magnetic resonance imaging showed compression of the spinal cord and indentation of caudal cerebellum. The diagnosis was Chiari-like malformation, atlantoaxial subluxation with ventral displacement of C2, atlanto-occipital overlapping, and syringomyelia. The dog underwent foramen magnum decompression (FMD), dorsal laminectomy of C1, and ventral fixation of the atlantoaxial joint. Soon after the operation, voluntary movements of the legs were recovered. Finally, the dog could stand and walk without assistance. The dog had complicated malformations at the craniocervical junction but FMD and dorsal laminectomy for Chiari-like malformation, and ventral fixation for atlantoaxial subluxation, resulted in an excellent clinical outcome.

Key words: Canine, Craniocervical junction abnormalities, Atlantoaxial subluxation.


 
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How to Cite this Article
Pubmed Style

Harumichi Itoh, Kazuhito Itamoto, Shotaro Etoh, Tomoya Haraguchi, Shimpei Nishikawa, Kenji Tani, Yoshiki Itoh, Masato Hiyama, Toshie Iseri, Munekazu Nakaichi, Yasuho Taura. Craniocervical junction abnormalities with atlantoaxial subluxation caused by ventral subluxation of C2 in a dog. Open Vet J. 2017; 7(1): 65-69. doi:10.4314/ovj.v7i1.10

Web Style

Harumichi Itoh, Kazuhito Itamoto, Shotaro Etoh, Tomoya Haraguchi, Shimpei Nishikawa, Kenji Tani, Yoshiki Itoh, Masato Hiyama, Toshie Iseri, Munekazu Nakaichi, Yasuho Taura. Craniocervical junction abnormalities with atlantoaxial subluxation caused by ventral subluxation of C2 in a dog. https://www.openveterinaryjournal.com/?mno=242261 [Access: April 22, 2024]. doi:10.4314/ovj.v7i1.10

AMA (American Medical Association) Style

Harumichi Itoh, Kazuhito Itamoto, Shotaro Etoh, Tomoya Haraguchi, Shimpei Nishikawa, Kenji Tani, Yoshiki Itoh, Masato Hiyama, Toshie Iseri, Munekazu Nakaichi, Yasuho Taura. Craniocervical junction abnormalities with atlantoaxial subluxation caused by ventral subluxation of C2 in a dog. Open Vet J. 2017; 7(1): 65-69. doi:10.4314/ovj.v7i1.10


Vancouver/ICMJE Style

Harumichi Itoh, Kazuhito Itamoto, Shotaro Etoh, Tomoya Haraguchi, Shimpei Nishikawa, Kenji Tani, Yoshiki Itoh, Masato Hiyama, Toshie Iseri, Munekazu Nakaichi, Yasuho Taura. Craniocervical junction abnormalities with atlantoaxial subluxation caused by ventral subluxation of C2 in a dog. Open Vet J. (2017), [cited April 22, 2024]; 7(1): 65-69. doi:10.4314/ovj.v7i1.10


Harvard Style

Harumichi Itoh, Kazuhito Itamoto, Shotaro Etoh, Tomoya Haraguchi, Shimpei Nishikawa, Kenji Tani, Yoshiki Itoh, Masato Hiyama, Toshie Iseri, Munekazu Nakaichi, Yasuho Taura (2017) Craniocervical junction abnormalities with atlantoaxial subluxation caused by ventral subluxation of C2 in a dog. Open Vet J, 7 (1), 65-69. doi:10.4314/ovj.v7i1.10


Turabian Style

Harumichi Itoh, Kazuhito Itamoto, Shotaro Etoh, Tomoya Haraguchi, Shimpei Nishikawa, Kenji Tani, Yoshiki Itoh, Masato Hiyama, Toshie Iseri, Munekazu Nakaichi, Yasuho Taura. 2017. Craniocervical junction abnormalities with atlantoaxial subluxation caused by ventral subluxation of C2 in a dog. Open Veterinary Journal, 7 (1), 65-69. doi:10.4314/ovj.v7i1.10


Chicago Style

Harumichi Itoh, Kazuhito Itamoto, Shotaro Etoh, Tomoya Haraguchi, Shimpei Nishikawa, Kenji Tani, Yoshiki Itoh, Masato Hiyama, Toshie Iseri, Munekazu Nakaichi, Yasuho Taura. "Craniocervical junction abnormalities with atlantoaxial subluxation caused by ventral subluxation of C2 in a dog." Open Veterinary Journal 7 (2017), 65-69. doi:10.4314/ovj.v7i1.10


MLA (The Modern Language Association) Style

Harumichi Itoh, Kazuhito Itamoto, Shotaro Etoh, Tomoya Haraguchi, Shimpei Nishikawa, Kenji Tani, Yoshiki Itoh, Masato Hiyama, Toshie Iseri, Munekazu Nakaichi, Yasuho Taura. "Craniocervical junction abnormalities with atlantoaxial subluxation caused by ventral subluxation of C2 in a dog." Open Veterinary Journal 7.1 (2017), 65-69. Print. doi:10.4314/ovj.v7i1.10


APA (American Psychological Association) Style

Harumichi Itoh, Kazuhito Itamoto, Shotaro Etoh, Tomoya Haraguchi, Shimpei Nishikawa, Kenji Tani, Yoshiki Itoh, Masato Hiyama, Toshie Iseri, Munekazu Nakaichi, Yasuho Taura (2017) Craniocervical junction abnormalities with atlantoaxial subluxation caused by ventral subluxation of C2 in a dog. Open Veterinary Journal, 7 (1), 65-69. doi:10.4314/ovj.v7i1.10


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