Artrodese tibiotársica com utilização de parafusos de aço inoxidável 304L auto-atarraxantes: Estudo experimental em cães

• Autor(a) principal: Camacho, Breno Gonçalves Leon
• Data de Publicação: 2005
• Tipo de documento: Dissertação
• Idioma: por
• Título da fonte: LOCUS Repositório Institucional da UFV
• Texto Completo: http://locus.ufv.br/handle/123456789/5003
• topic: Cão; Cirurgia; Artrodese; Dog; Surgery; Arthrodesis; CNPQ::CIENCIAS AGRARIAS::MEDICINA VETERINARIA::CLINICA E CIRURGIA ANIMAL

The aim of this study was to evaluate, in a experimental form, the surgical technique to get the arthrodesis on the tibiotarsal joint using 304L self-tapping stainless steel screws. Ten healthy adult female canines, with of a non-defined breed , whose weight ranged from 15 to 20 Kg were used. After exposition and condrectomy, the tibiotarsal joint was manually kept at an angle of around 135°, and a hole was drilled following the postero/anterior direction through the calcaneus tuber up to the dorsal cortex of the tibia area, where the screw was introduced. After that a second hole was drilled, this time following the latero-distal direction of the calcaneus crossing the talus up to the cortex of the medial malleolus, allowing the insertion of a second screw. The incised tissues were sewed the usual way. The animals went through a daily clinical evaluation within the first 15 days and then on 30th, 45 th, 60th, 90th and 120th days. X-ray exams were done over the operated member, immediately after the surgery and then on the 15th, 30th, 45 th, 60th, 90th and 120th days. Among the ten evaluated dogs, four went through another surgical intervention 120 days after the inicial intervention in order to have the implants removed and then they went on to be evaluated for another 30 days. The animals presented a satisfactory clinical healing with variable lameness degrees and normal deambulation around 50 and 60 days after the surgery. An X-ray exam showed the joint fusion about 45 days later. Osteolisis was seen around the screws that neither damaged the immobilization nor caused their migration. The results obtained with such a technique a conclusion that there was an adequate stability of the tibiotarsal joint, favoring a rigid bone fusion of the joint extremities, which was confirmed after the implant was removed.