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EnglishThe purpose of this study was to describe our initial experience with double pelvic osteotomy (DPO) in young dogs affected by hip dysplasia (HD) and to report their postoperative outcome. Seven dogs (four females and three males) were included in our study with mean age 8.3 (±1.7) months, and mean body weight 29.5 (±7.4)Kg. Breeds involved were: Rottweiler (n = 1), Labrador Retriever (n = 3), Golden Retriever (n = 1), Great Dane (n=1) and Sao Miguel Cattle Dog (n = 1). The most common history complaints were: pelvic limb lameness and pain at hip extension and hip abduction. All surgical procedures consisted of osteotomy of the ilium and pubis, acetabular ventroversion and iliac stabilization with a customized bone plate with seven screws, four screws placed at the cranial fragment and the remaining three in the caudal aspect. Average surgical time was 65.8 (±10.4) minutes and median follow-up assessment was 68 (±15) days. Fracture healing was observed within mean period of 26.3 (±8.9) days. Six patients (86%) had satisfactory outcome and one patient didn’t improve after surgery and had to undergo a total hip replacement. Our results showed that DPO is an effective treatment for HD due to the preservation of pelvic geometry and low postoperative morbidity. Since it is a recent technique, further studies are recommended. Key words: double pelvic osteotomy; hip dysplasia; acetabular ventroversion portuguesO objetivo do estudo e a descricao da osteotomia dupla da pelve (ODP) em pacientes com displasia coxofemoral (DCF) e relatar a evolucao pos-operatoria. As racas acometidas foram: Rottweiler (n=1), Labrador (n=3), Golden Retriver (n=1), Dogue alemao (n=1) e Fila de Sao Miguel (n=1). O total foi de sete animais, sendo tres machos e quatro femeas; a media de idade e peso dos caes foi de 8,3±1,7 meses e 29,5±7,4Kg, respectivamente. As queixas iniciais mais comuns antes da cirurgia foram: claudicacao em membro pelvico e dor a extensao e abducao do quadril. A cirurgia constou em realizar a osteotomia do ilio e pubis, rotacao axial do acetabulo sobre a cabeca do femur e osteossintese do ilio com a utilizacao de placa fixada com sete parafusos, quatro destes no segmento cranial e tres no segmento caudal. Apos a cirurgia um animal nao apresentou melhora do quadro, caracterizado por agravamento da subluxacao coxofemoral, sendo submetido a protese total de quadril. O tempo medio de cirurgia foi de 65,8±10,4 minutos e o periodo de acompanhamento medio pos operatorio foi de 68,0±15,0dias, visibilizando a reacao osteoproliferativa no foco de osteotomia iliaca em um periodo medio de 26,3±8,9 dias. Dos sete animais envolvidos no estudo, seis tiveram recuperacao satisfatoria apos o primeiro procedimento no periodo avaliado. Os resultados apontam a tecnica de OPD como procedimento eficiente no tratamento de DCF devido a preservacao da geometria pelvica e baixa morbidade pos-operatoria. Por se tratar de uma recente tecnica, ainda pouco difundida, e interessante a realizacao de maiores estudos. Palavras-chave: osteotomia pelvica dupla; displasia coxofemoral; ventroversao acetabular

Clinical and radiographic evaluation of double pelvic osteotomy to treat canine hip dysplasia