Freqüência da displasia coxofemoral em cães da raça Pastor Alemão / Frequency of hip dysplasia in German Shepherd dogs

One hundred twenty-three radiographs of German Shepherd dogs (47 females and 76 males) from Military Police of Minas Gerais State were studied from April 2001 to july 2004, with the purpose of establishing the frequency and asymmetry of hip displasia. The radiographs were taken with the animals in the ventrodorsal position, with the limbs parallel and the pelvis symmetric. The average age of the dogs was 33.8±23.5 months-old. The study indicated that 89.4 percent of them had hip dysplasia (91.5 percent of females and 88.2 percent of males), being 6.3 percent unilateral, 17.3 percent bilateral asymmetric, and 76.4 percent bilateral symmetric. The frequency of hip displasia in the studied population was high, indicating the necessity of an efficient control program of the disease.

Incidência de displasia coxofemoral em cães da raça Border Collie / Incidence of hip dysplasia in the Border Collie / Incidencia de displasia de cadera en caninos border collie

A Displasia Coxofemoral (DCF) é uma doença poligênica de natureza quantitativa, multifatorial e extremamente complexa, que comumente resulta em alterações degeneratiyas irreversíveis. O presente trabalho é um estudo radiográfico que avalia a freqüência e as lesões osteoarticulares da DCF em cães da raça Border Collie. Através do Ângulo de Norberg, classificou-se 52 pelves de cães da raça Border Collie, que foram submetidas ao exame radiográfico no Hospital Veterinário CESUMAR. Embora sejam cães de médio porte, mais da metade da população estudada (76%) tinha algum grau de displasia, mostrando incidência maior do que a referida pela Orthopedic Foundation for Animais.

Hip Dysplasia (HD) is a quantitative polygenic disease, multifactorial, and extremely complex, which commonly results in irreversible degenerative alterations. This article is a radiographic study which evaluates the frequency and the osteoarticular injuries of the HD in dogs from the Border Collie breed. Through the Norberg Angle, 52 pelvises of dogs from the Border Collie breed were submitted to radiographic exams on CESUMAR Veterinary Hospital. Although they are medium size dogs, more then half of the population studied (76%) had some degree of Dysplasia, presenting a larger incidence than that referred by the Orthopedic Foundation for Animals.