Vértebra coccígea como alternativa a autoenxertos corticoesponjosos tradicionais - análise de resistência e estrutura

• Autor(a) principal: Serafini, Gabriele Maria Callegaro
• Data de Publicação: 2015
• Tipo de documento: Tese
• Idioma: por
• Título da fonte: Manancial - Repositório Digital da UFSM
• dARK ID: ark:/26339/00130000139hv
• Texto Completo: http://repositorio.ufsm.br/handle/1/17589
• topic: Fraturas; Enxerto; Cicatrização; Ortopedia; Cães; Fracture; Graft; Healing; Orthopedics; Dogs; CNPQ::CIENCIAS AGRARIAS::MEDICINA VETERINARIA

Fractures with loss of total bone segment often require the use of the graft to fill the defect and restore the normal length of the affected bone. However, the unavailability of bone bank and the presence of autografts with insufficient dimensions are one of the biggest issues in choosing this technique. Because of this, this study aimed to investigate the structural characteristics of coccygeal vertebra suggesting it as an alternative of cortical-cancellous autograft of total bone segment. To this end, eight ex vivo dogs were used, with each dog donor of two samples of each bone grafts following groups: cranial-dorsal portion of the right and left iliac crest (Group A), 10th fragment of the right and left ribs (Group C), 4th and 5th coccygeal vertebrae (Group Co) and diaphyseal portion of the right and left tibia (Group T), resulting in 16 samples per group. Such grafts underwent computed tomography for measurement of cancellous bone, cortical bone and bone thickness and biomechanical test to evaluate the resistance. The coccygeal vertebrae showed desirable characteristics in a cortical-cancellous graft of total bone segment, because it presented significant cancellous bone amount, high compressive strength and adequate bone thickness.