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  • Author or Editor: Karen M. Park x
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To describe methods to measure the 3-D orientation of the proximal, diaphyseal, and distal segments of the canine radius by use of computer-aided design software (CADS) and to compare the repeatability and reliability of measurements derived by those methods.


31 canine radii with biapical deformities and 24 clinically normal (control) canine radii.


Select CT scans of radii were imported into a CADS program. Cartesian coordinate systems for the humerus and proximal, diaphyseal, and distal radial segments were developed. The orientation of each radial segment in the frontal, sagittal, and transverse planes was measured in triplicate by 3 methods. The repeatability and reliability of those measurements were calculated and compared among the 3 measurement methods.


The mean ± SD within-subject repeatability of radial angular measurements for all 3 methods was 1.40 ± 0.67° in the frontal plane, 3.17 ± 2.21° in the sagittal plane, and 3.01 ± 1.11° in the transverse plane for control radii and 2.56 ± 1.95° in the frontal plane, 3.59 ± 2.39° in the sagittal plane, and 3.47 ± 1.19° in the transverse plane for abnormal radii. Mean ± SD bias between radial measurement methods was 1.88 ± 2.07° in the frontal plane, 6.44 ± 6.80° in the sagittal plane, and 2.27 ± 2.81° in the transverse plane.


Results indicated that use of CADS to assess the 3-D orientation of the proximal, diaphyseal, and distal segments of normal and abnormal canine radii yielded highly repeatable and reliable measurements.

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in American Journal of Veterinary Research

An 8-year-old 37.1-kg (81.6-lb) sexually intact male pit bull-type dog was referred to the University of Georgia because of a 3-month history of left pelvic limb lameness. Three months prior to the referral evaluation, the dog was chasing water from a hose when it suddenly cried out and was immediately lame on the left pelvic limb. The referring veterinarian treated the dog with tramadol (4 mg/kg [1.82 mg/lb], PO, q 8 to 12 h) and carprofen (2.2 mg/kg [1.0 mg/lb], PO, q 12 h). Despite medical treatment, the dog remained lame and would intermittently hold the left pelvic limb off

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in Journal of the American Veterinary Medical Association