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O objetivo do estudo foi avaliar o efeito do enxerto ósseo corticoesponjoso na osteogênese em falha cortical ulnar de galinhas domésticas. Foram utilizadas 18 galinhas, com aproximadamente 70 semanas de idade e peso corpóreo médio de 2,5kg. Criou-se uma falha óssea na porção diafisária média da ulna em ambas as asas, sendo a direita utilizada como grupo-controle (grupo I) e a esquerda como grupo-tratado (grupo II). As aves foram subdivididas aleatoriamente em quatro subgrupos de acordo com o período de observação (14, 35, 60 e 90 dias). No grupo II, dois fragmentos ósseos da carena do esterno foram retirados, seccionados e implantados na falha óssea. Ao término do período de observação de cada subgrupo, as aves foram abatidas com tiopental sódico para realização dos exames histopatológico e radiográfico post-mortem, com classificação dos resultados em escala semiquantitativa (escore). O grupo II demonstrou osteogênese mais evidente aos 35 e 90 dias de pós-cirúrgico (P<0,05). Ao comparar os grupos I e II, sem levar-se em consideração o tempo de observação, foi possível observar que houve diferença estatística significativa (P<0,05). Conclui-se que o enxerto ósseo corticoesponjoso demonstra potencial osteogênico satisfatório na espécie estudada, entretanto retarda o tempo de remodelação óssea quando aplicado sobre falhas estáveis pequenas.

The aim of this survey was to evaluate the effect of cortico-cancellous bone grafting in osteogenesis in cortical ulnar failure in domestic chickens. Eighteen chickens weighing 2.5kg with approximately 70 weeks of age were used. A bone defect in the middle portion of the ulna shaft was created in both wings; the right wing in the control group (Group I) and the left in the treated group (Group II). The birds were randomly divided into four subgroups according to the observation period (14, 35, 60 and 90 days). In group II, two bone fragments of the keel of the sternum were removed, sectioned and implanted in the bone defects. At the end of the observation period for each subgroup, the birds were euthanaized with sodium thiopental to perform the histopathological and radiographic postmortem, with ranking of results in a semi-quantitative scale (score). Group II showed a more evident osteogenisis at 35 and 90 days after surgery (P<0.05). In comparing both groups, without time observation, there was statistical difference (P<0.05). In conclusion, the cortico-cancellous bone graft demonstrated satisfactory osteogenic potential in the specie studied, however, it delays the bone remodeling time when applied in stable small failures.

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We report here the first known case of natural infection of a bush dog with Leishmania (Leishmania) chagasi in Brazil. The specimen was captured in the wild in the State of Mato Grosso and is currently being held in captivity at Fundação Jardim Zoológico, Rio de Janeiro, Brazil. The leishmaniasis was diagnosed by culture of promastigote forms in intact skin fragments and their characterization by isoenzyme electrophoresis. This report calls attention to the parasitological and etiological control of certain zoonoses, such as leishmaniasis, in wild animals kept in captivity, especially when animals are exchanged between zoos in Brazil.

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Nine cases of acquired valgus deformity following injury to the proximal tibial metaphysis in children are presented. The deformity is of a dual nature, involving both angular deformity and longitudinal overgrowth. The angular component reaches a maximum within 2 years after the injury. There is some indication that the angular component will remain static or spontaneously correct if treated nonoperatively. Treatment intervention in the majority of the cases has precluded an analysis of the natural history of the longitudinal overgrowth. Early intervention in the form of corrective osteotomy during the growth years has resulted in an unacceptably high rate of recurrence of both components of the deformity. Nonoperative treatment seems to be the treatment of choice for the angular component of valgus deformity following proximal tibial fracture in children. Significant longitudinal overgrowth may be corrected with appropriately timed epiphysiodeses calculated from observed growth rates and skeletal maturational patterns.

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