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  • Title: The relationship between limb function and radiographic osteoarthrosis in dogs with stifle osteoarthrosis.
    Author: Gordon WJ, Conzemius MG, Riedesel E, Besancon MF, Evans R, Wilke V, Ritter MJ.
    Journal: Vet Surg; 2003; 32(5):451-4. PubMed ID: 14569573.
    Abstract:
    OBJECTIVE: To evaluate the relationship between limb function and radiographic evidence of stifle osteoarthrosis (OA) in dogs. STUDY DESIGN: The relationship between force platform data and radiographic OA score was evaluated on 2 separate days using regression analysis. Interday variation was also assessed. ANIMALS: Forty-one dogs with visible lameness and radiographic evidence of stifle OA. METHODS: Force platform data were collected at a velocity of 1.7 to 2.0 m/s for 5 trials on day 1 and day 8. Radiographs taken on day 1 were scored using a previously reported OA scoring system. RESULTS: No significant relationship was found between force platform data and OA score. No significant differences were found between any day 1 and day 8 force platform values. CONCLUSIONS: Although radiographic evidence of stifle OA provides evidence of pathology, it does a poor job of representing limb function. In addition, the absence of significant differences between day 1 and day 8 values in this population of dogs supports use of only a single force platform evaluation before measuring a treatment effect. CLINICAL RELEVANCE: The presence of OA in the stifle joint does not correlate with clinical function; radiographic outcome should be used cautiously as a predictor of clinical outcome.
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