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portuguesO objetivo deste estudo foi avaliar, retrospectivamente, a frequencia das fraturas de femur em caes e gatos, na rotina de um hospital escola, determinando a classificacao, metodos de fixacao, complicacoes e desfecho. No total, 61 animais, 50 (82,0%) caes e 11 (18,0%) gatos, apresentaram fraturas de femur submetidas a osteossintese. Sessenta e duas fraturas de femur foram avaliadas neste estudo. As fraturas simples localizadas na epifise distal (n=25) foram as mais frequentes (P=0,0001). Para osteossintese das fraturas proximais, foram utilizados pinos intramedulares em associacao a cerclagem e banda de tensao. Nas fraturas diafisarias, foram utilizadas placas osseas e parafusos, dois pinos intramedulares (isolados ou com cerclagem) e fixador externo Tie-In e, nas fraturas distais, pinos intramedulares de Rush modificados, pinos cruzados e fixador externo Tie-In. Comparando-se a frequencia de complicacoes que necessitaram reintervencao apos osteossintese, entre as localizacoes das fraturas, independente da tecnica empregada, houve uma diferenca significativa (P=0,0253) entre as diafisarias (31,25%) e distais (7,14%). Conclui-se que as fraturas epifisarias distais foram as mais frequentes na rotina de um hospital escola e, quando tratadas com pinos intramedulares de Rush modificados ou pinos cruzados, apresentaram menor frequencia de complicacoes para a consolidacao. Palavras-chave: pequenos animais; casuistica; estudo retrospectivo; fraturas distais EnglishThe aim of this study was to retrospectively evaluate the frequency of femur fractures in dogs and cats in the routine of a school hospital, determining their classification, fixation methods, complications, and outcomes. A total of 61 animals, 50 (82.0%) dogs and 11 (18.0%) cats, had femoral fractures that were submitted to osteosynthesis. Sixty-two femoral fractures were evaluated. Single fractures in the distal epiphysis (n=25) were the most frequent (P=0.0001). Intramedullary pins were used in association with cerclage and tension band for osteosynthesis in proximal fractures. In diaphyseal fractures, bone plates and screws, two intramedullary pins (insulated or with cerclage) and Tie-In configuration were used. In distal fractures, modified Rush intramedullary pins, cross pins and Tie-In configuration were used. Comparing complication frequencies at fracture sites that required reintervention after osteosynthesis, a significant difference was observed (P=0.0253) between the diaphyseal (31.25%) and distal (7.14%) fractures independent of the technique used. We concluded that distal epiphyseal fractures were the most frequent in the routine of a school hospital. Distal epiphyseal fractures presented a lower frequency of complications for consolidation when treated with modified Rush intramedullary pins or crossed pins. Key words: small animals; casuistry; retrospective study; distal fractures

Classification, fixation techniques, complications and outcomes of femur fractures in dogs and cats: 61 cases (2015-2016)