Yayın: Tratamento de fraturas de extremidades de cães e gatos usando fixador externo versátil
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Universidade de São Paulo. Faculdade de Medicina Veterinária e Zootecnia
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Diversas fraturas ósseas complicadas podem ser tratadas por diferentes técnicas, incluindo fixadores externos lineares. Os fixadores externos lineares de nova geração aumentaram o escopo de aplicação para fraturas ósseas devido ao progresso mecânico. A dificuldade é implementar um número suficiente de pinos através de clamps de fixação aos fragmentos osseos ou adição de clamps com fixação adequadamente à haste com o ângulo correto de inserção do pino. As configurações eficazes nem sempre podem ser realizadas. Este estudo pretendia revelar a eficácia clínica das clamps modificadas de um fixador externo versátil para corrigir diferentes tipos de fraturas e problemas ortopédicos de acordo com os resultados radiográficos e clínicos. O fixador foi utilizado em 17 gatos e 17 cães de diferentes idades e tamanhos, com diferentes tipos de antebraço, úmero, tíbia, fratura de ulna e deformidades ósseo-musculares. Os clamps tinham recursos diferentes para conectar os pinos do fixador. Muitas configurações de fixadores foram criadas de acordo com o tipo de fratura e peso corporal dos animais. As mais utilizadas foram as configurações unilateral e bilateral. A formação do calo e a análise visual da marcha foram observadas após as cirurgias, até a retirada do fixador. Após a retirada do fixador, a utilização dos membros foi excelente em 67% dos casos, bom em 15% dos casos, regular em 12% dos casos, ruim em 6% dos casos. Concluímos que as hastes e os pinos do fixador foram facilmente conectados por clamps semitravados. Além disso, os clamps de fixação de pino duplo economizaram espaço na haste de fixação com a aplicação de dois pinos em clamp. Acreditamos que os clamps de fixadores externos versáteis podem ser facilmente construídas para fraturas de membros, economizando tempo na cirurgia.
Many complicated bone fractures can be healed by different techniques including linear external fixation. New generation linear external fixators enhanced the scope of application for bone fractures by mechanical progress. Difficulties include implementing enough pins through fixation clamps to the comminuted fragments or clamp addition and fixing it properly to the rod with the correct pin insertion angle. Effective configurations may not always result. This study sought to reveal the clinical efficiency of modified clamps of a versatile external fixator (VEF) to fix different types of fractures and orthopedic problems according to the radiographic and clinical results. We used this fixator on 17 cats and 17 dogs of different ages and sizes, having different types of antebrachium, humerus, tibia, ulna fractures, and bone-muscle deformities. Clamps had different features to connect fixator pins. Many fixator configurations were created according to the fracture type and body weight of the animals. The most used ones were unilateral and bilateral configurations. The callus formation and visual gait analysis were observed after the operations, until the removal of the fixator. After fixator removal, the visual gait status of the limbs was excellent in 67% of the cases, good in 15%, fair in 12%, and poor in 6%. We found that rods and fixator pins were connected easily by semi-locked clamps. Also, the double pin holding clamps saved space on the fixation rod by the application of two pins through one clamp. We think that clamps of versatile external fixators can easily be constructed to limb fractures and save time during surgery.
Many complicated bone fractures can be healed by different techniques including linear external fixation. New generation linear external fixators enhanced the scope of application for bone fractures by mechanical progress. Difficulties include implementing enough pins through fixation clamps to the comminuted fragments or clamp addition and fixing it properly to the rod with the correct pin insertion angle. Effective configurations may not always result. This study sought to reveal the clinical efficiency of modified clamps of a versatile external fixator (VEF) to fix different types of fractures and orthopedic problems according to the radiographic and clinical results. We used this fixator on 17 cats and 17 dogs of different ages and sizes, having different types of antebrachium, humerus, tibia, ulna fractures, and bone-muscle deformities. Clamps had different features to connect fixator pins. Many fixator configurations were created according to the fracture type and body weight of the animals. The most used ones were unilateral and bilateral configurations. The callus formation and visual gait analysis were observed after the operations, until the removal of the fixator. After fixator removal, the visual gait status of the limbs was excellent in 67% of the cases, good in 15%, fair in 12%, and poor in 6%. We found that rods and fixator pins were connected easily by semi-locked clamps. Also, the double pin holding clamps saved space on the fixation rod by the application of two pins through one clamp. We think that clamps of versatile external fixators can easily be constructed to limb fractures and save time during surgery.
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OPEN
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Clamp, Fixadores lineares, Bone fractures, Osteossíntese, Pinos fixadores, Osteosynthesis, Fixator pins, Clamps, Linear fixators, Fraturas ósseas
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