Biomechanical evaluation of three ventral fixation methods for canine          atlantoaxial instability: a cadaveric study

Fumitaka TAKAHASHI; Takaharu HAKOZAKI; Nobuo KANNO; Yasuji HARADA; Shinya YAMAGUCHI; Yasushi HARA

doi:10.1292/jvms.16-0160

Surgery

Biomechanical evaluation of three ventral fixation methods for canine atlantoaxial instability: a cadaveric study

Fumitaka TAKAHASHI, Takaharu HAKOZAKI, Nobuo KANNO, Yasuji HARADA, Shinya YAMAGUCHI, Yasushi HARA

Author information

Fumitaka TAKAHASHI
The Laboratory of Veterinary Surgery, Nippon Veterinary and Life Science University, 1–7–1 Kyonan, Musashino, Tokyo 180–0023, Japan
Takaharu HAKOZAKI
The Laboratory of Veterinary Surgery, Nippon Veterinary and Life Science University, 1–7–1 Kyonan, Musashino, Tokyo 180–0023, Japan
Nobuo KANNO
The Laboratory of Veterinary Surgery, Nippon Veterinary and Life Science University, 1–7–1 Kyonan, Musashino, Tokyo 180–0023, Japan
Yasuji HARADA
The Laboratory of Veterinary Surgery, Nippon Veterinary and Life Science University, 1–7–1 Kyonan, Musashino, Tokyo 180–0023, Japan
Shinya YAMAGUCHI
The Laboratory of Veterinary Surgery, Nippon Veterinary and Life Science University, 1–7–1 Kyonan, Musashino, Tokyo 180–0023, Japan
Yasushi HARA
The Laboratory of Veterinary Surgery, Nippon Veterinary and Life Science University, 1–7–1 Kyonan, Musashino, Tokyo 180–0023, Japan

Keywords: atlantoaxial plate fixation, flexural stress, polymethylmethacrylate fixation, torsional stress, transarticular fixation

JOURNAL FREE ACCESS

2016 Volume 78 Issue 12 Pages 1897-1902

DOI https://doi.org/10.1292/jvms.16-0160

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J-STAGE : jvms 79 2 pp.e1-e1

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Abstract

We evaluated comparatively the mechanical strength in three kinds of surgical fixation techniques for canine atlantoaxial joint. Atlantoaxial plate fixation (APF), polymethylmethacrylate (PMMA) fixation (PMF) and transarticular fixation (TAF) were applied to the atlas and axis harvested from healthy beagle dogs, and then, the specimens were tested. The PMF group had significantly higher resistance to flexion than the APF group (P=0.030) and the TAF group (P=0.004). There were no significant differences in resistance to torsion between the APF group and the PMF group, while the APF group had significantly higher resistance to torsion than the TAF group (P=0.037). Considering the possible drawbacks of using PMMA, the APF method is proposed as an alternative to the PMF method.

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