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Canine hip dysplasia: the disease and its diagnosis. The disease remains a concern for breeders, veterinarians and owners, and it may severely limit the physical performance of dogs ( Kapatkin et al. Diagnosis, genetic control and preventive management of canine hip dysplasia: a review. Distrator articular no diagnóstico radiográfico precoce da displasia coxofemoral em cães. Evaluation of risk factors for degenerative joint disease associated with hip dysplasia in dogs. Breeding programs based on the selection of dogs with normal phenotype had limited success and prevalence of disease remains high, exceeding 70% in some breeds ( Smith et al. The canine hip dysplasia (CHD), though extensively studied, is still considered a disease difficult to control due to its complex genetic origin. Ĭães linha Morgan displasia coxofemoral índice de distração doença articular degenerativa Dos oito animais classificados como displásicos leves, cinco apresentaram apenas LM como sinal de DAD. Nenhum dos animais considerados suspeitos ou normais apresentou LM. Dos 24 (60%) animais que apresentaram LM, 11 (45,83%) foram classificados como displásicos graves, cinco (20,83%) como médios e oito (33,33%) como leves. Houve associação significativa entre presença de LM com o grau de DCF, e quanto mais grave a DCF, maior foi o percentual de resultados positivos da LM. Dos 31 animais que apresentaram ID ≤ 0,3 no primeiro momento, seis (19,4%) desenvolveram LM no segundo momento. Destas, 31 (63,3%) apresentaram LM no segundo momento. No primeiro momento, 49 articulações apresentaram ID > 0,3. Observou-se que, quando o ID era maior que 0,3 no primeiro momento, a chance de um resultado positivo da LM no segundo momento aumentava em 7,2 vezes.
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Verificou-se que ID, AI e encurtamento e/ou espessamento do colo femoral e formação de osteófitos foram associados à presença da LM. Os objetivos foram avaliar a presença da linha Morgan (LM) e de outros sinais de DAD, correlacionando-os com o grau de displasia coxofemoral (DCF) além de se verificar se o ID maior que 0,3 (primeiro momento) possui associação com a presença de LM (segundo momento). O MRD foi realizado para se estabelecer o índice de distração (ID). No MRC, mensurou-se o ângulo de Norberg (AN), o ângulo de inclinação (AI) e avaliou-se a presença de doença articular degenerativa (DAD). Utilizaram-se o método radiográfico convencional (MRC) e o método radiográfico em distração (MRD), ambos realizados nos dois momentos. As radiografias de cada animal foram obtidas em dois momentos: um (média de 7,23 meses de idade) e dois (média de 14,25 meses). Among the 8 animals classified as mild dysplastics, 5 showed only ML as DJD.ĭogs morgan line hip dysplasia distraction index degenerative joint diseaseĪvaliaram-se 160 radiografias das articulações coxofemorais de 40 cães de diferentes raças de grande porte, provenientes de Belo Horizonte, Brasil. None of the animals classified as normal or borderline presented ML. Thus, among the 24 (60 %) animals that showed ML, 11 (45.83 %) were classified as severe dysplastics, 5 (20.83%) as moderate and 8 (33.33 %) as mild. The more severe the CHD, the higher the percentage of positive ML results. There has been a significant association between the presence of ML and the degree of CHD. Of the 31 animals that showed DI ≤ 0.3 at first, six (19.4%) had LM at the second stage. Thus, 49 joints showed DI > 0.3 at the first stage, in which 31 (63.3 %) presented ML at the second stage. It was observed that if the DI is greater than 0.3 at the first stage, the chance of a positive outcome of ML in the second stage increases by 7.2 times. It was found that DI, AI and changes of femoral neck and the formation of osteophytes were associated with the presence of ML. The aims were to evaluate the presence of the Morgan line and other signs of DJD and correlate them with the degree of canine hip dysplasia (CHD) and also check if the DI greater than 0.3 (first stage) was associated with the presence of ML (second stage). The MRD was performed to establish the distraction index (DI). CRM measured the Norberg angle (NA), the angle of inclination (AI) and evaluated the presence of degenerative joint disease (DJD). The conventional radiographic method (CRM) and the radiographic distraction method (RDM) were used, carried out in both stages. The radiographs of each dog were obtained at two different stages: stage 1 (mean 7.23 months) and stage 2 (mean 14.25). We evaluated 160 hip joint radiographs of 40 dogs of different large breeds (25 females and 15 males) from the metropolitan area of Belo Horizonte, Minas Gerais, Brazil.