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1.
J Child Orthop ; 10(4): 359-64, 2016 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-27278056

RESUMO

PURPOSE: To test the hypothesis that epiphysiodesis made with radiofrequency ablation (RFA) is a safe procedure that disrupts the growth plate without damaging the adjacent joint articular cartilage. METHODS: RFA epiphysiodesis was done during 8 min in vivo in 40 growing pig tibia physis. In addition, three tibiae were ablated for 16 min and three more for 24 min. As a burned cartilage reference, six tibiae were ablated on the joint articular cartilage for 8 min. After the procedure, the animals were terminated and the tibiae were harvested. Magnetic resonance imaging (MRI) was done ex vivo to evaluate the joint articular cartilage in all samples. We used T1-weighted, T2-weighted, and water content sequences under a 1.5 T magnetic field. RESULTS: On the burned articular cartilage, intensity changes were observed at MRI. We found no evidence of articular cartilage damage on the 40 8-min RFA procedures. The tibiae ablated for 16 min and 24 min showed intact joint cartilage. CONCLUSIONS: Epiphysiodesis using RFA is safe for the adjacent articular cartilage. This study shows that RFA can be done safely in the growing physis of pigs, even with triple duration procedures.

2.
Rev Interam Radiol ; 2(3): 143-8, 1977 Jul.
Artigo em Espanhol | MEDLINE | ID: mdl-897486

RESUMO

In angiographic studies of the Pathology Department and Radiology Department of the "20 of November Hospital" of the I.S.S.S.T.E. (Mexico, D.F.) from 1962 to 1974, were reviewed and 178 intracranial aneurysms in 141 patients were found. There is a two to one ratio females over males. 16.8% of the cases show multiple aneurysms and they were found to be more common during the fifth decade of life.


Assuntos
Angiografia Cerebral , Aneurisma Intracraniano/diagnóstico por imagem , Adolescente , Adulto , Idoso , Criança , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Estudos Retrospectivos
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