Mensuration of cervical vertebral ratios in Doberman pinschers and Great Danes

Canine cervical vertebral instability is a complex syndrome involving cervical spinal cord compressive lesions. Doberman pinschers and Great Danes are the most commonly affected breeds. Measurements of vertebral canal diameter (VCD), vertebral body height (H), and vertebral body length (L) were made from C₃-C₇ in 24 Doberman pinschers and 8 Great Danes by using digital and analog techniques. Significant differences between affected and unaffected sites were noted for Doberman pinschers at C₆ (P = 0,039) and C₇ (P = 0.027) using analog measurements of VCD/H, and Great Danes at C₆ using analog (P = 0.041) and digital (P = 0.004) measurements of VCD/L. Cervical vertebral ratios have potential as a breed-specific screening tool for cervical vertebral instability and warrant longitudinal studies.