RESUMEN
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.
Asunto(s)
Enfermedades de los Perros/diagnóstico por imagen , Enfermedades de los Perros/fisiopatología , Osteoartritis/veterinaria , Rodilla de Cuadrúpedos , Animales , Perros , Femenino , Marcha , Cojera Animal/diagnóstico por imagen , Cojera Animal/etiología , Cojera Animal/fisiopatología , Masculino , Osteoartritis/complicaciones , Osteoartritis/diagnóstico por imagen , Osteoartritis/fisiopatología , Radiografía/veterinaria , Rango del Movimiento ArticularRESUMEN
OBJECTIVE: To compare tibial plateau angle (TPA) between Greyhounds without damage to the cranial cruciate ligaments and Labrador Retrievers with and without damage to the cranial cruciate ligaments. DESIGN: Clinical study. ANIMALS: 87 client-owned dogs and 15 research colony Greyhounds. PROCEDURE: Standing position, horizontal-beam radiography was performed on Greyhounds and unaffected Labrador Retrievers to determine standing TPA. Lateral radiography of the stifle joint was performed on all dogs to determine traditional TPA. Age and body weight were recorded for unaffected and affected Labrador Retrievers. RESULTS: Greyhounds had mean standing TPA of 1.56 degrees and mean traditional TPA of 22.50 degrees. Unaffected Labrador Retrievers had mean standing TPA of 3.52 degrees and traditional TPA of 27.97 degrees. Affected Labrador Retrievers had mean traditional TPA of 25.55 degrees. No significant difference was found in mean standing TPA between Greyhounds and unaffected Labrador Retrievers. Standing TPAs in Greyhounds and unaffected Labrador Retrievers were not significantly different from a plane drawn parallel to the ground. Significant differences in traditional TPAs were detected among all 3 groups. CONCLUSIONS AND CLINICAL RELEVANCE: Greyhounds had mean traditional TPA of 22.50 degrees; similar angles should be considered normal for dogs. Although affected Labrador Retrievers had mean traditional TPA that was significantly greater than that of Greyhounds, the steepest TPA was found in unaffected Labrador Retrievers. Because Greyhounds and unaffected Labrador Retrievers had similar standing TPAs, we conclude that although TPA may be associated with damage to the cruciate ligaments, many dogs with a steep TPA do not develop cruciate ligament disease.
Asunto(s)
Lesiones del Ligamento Cruzado Anterior , Enfermedades de los Perros/patología , Perros/anatomía & histología , Rodilla de Cuadrúpedos/anatomía & histología , Tibia/anatomía & histología , Animales , Ligamento Cruzado Anterior/diagnóstico por imagen , Ligamento Cruzado Anterior/patología , Enfermedades de los Perros/diagnóstico por imagen , Enfermedades de los Perros/etiología , Perros/lesiones , Femenino , Masculino , Radiografía , Rotura/etiología , Rotura/patología , Rotura/veterinaria , Rodilla de Cuadrúpedos/diagnóstico por imagen , Rodilla de Cuadrúpedos/lesiones , Tibia/diagnóstico por imagenRESUMEN
An 18-month-old, intact female German shepherd dog was presented for evaluation of severe, frank hemorrhage from the vulva. A complete blood count, serum biochemical analysis, and urinalysis supported acute hemorrhage. Abdominal radiographs were unremarkable. Abdominal ultrasound demonstrated that the uterine body and cranial vaginal lumen were fluid-filled and contained hyperechoic, polypoid masses that were suspected to be blood clots. Exploratory laparotomy revealed a mildly enlarged uterus with a diffuse, cystic endometrium; significant amounts of blood and blood clots within the lumen; and several focal accumulations of yellow fluid presumed to be a purulent exudate. Histopathology confirmed severe, cystic, endometrial hyperplasia and pyometra complex.