Resumen Objetivo: Evaluar los datos demográficos, como edad, sexo, profesión, lado afectado, lesión única o múltiple, tipo de material utilizado, tiempo de cicatrización ósea y posibles complicaciones de los pacientes con fracturas diafisarias de húmero tratados mediante la técnica MIPO en tres centros hospitalarios de Ecuador, Paraguay y Brasil. Materiales y Métodos: Estudio retrospectivo, longitudinal, observacional de los datos de 133 pacientes recolectados en tres Servicios: de Quito (Ecuador), Asunción (Paraguay) y Passo Fundo (Brasil). Se compararon las distribuciones entre diferentes Servicios mediante la prueba x2 de Pearson. Resultados: La edad de los pacientes varió entre 17 y 76 años, con una media de 36 años. El tiempo promedio hasta la consolidación fue de 11 semanas (126 de 132 pacientes). Predominó el sexo masculino (70,45%), el lado derecho era el más afectado (55,3%), la mayoría de las fracturas eran únicas (85,61%), se logró la consolidación en el 95,45%. Solo el 9,09% tuvo complicaciones y el 6,82% fueron severas. El 87,12% no tuvo complicaciones; el 0,76% sufrió neuropraxia posquirúrgica; el 3,03%, infección y el 4,55%, seudoartrosis. Conclusión: Con la técnica MIPO para el tratamiento de las fracturas diafisarias de húmero, las tasas de complicaciones y de morbilidad son bajas, y la tasa de consolidación es buena.

Abstract Objective: To determine the demographic data of the patients in relation to age, sex, profession, affected side, single or multiple lesions, type of material used, bone healing time and possible complications of the treatment of diaphyseal fractures of the humerus treated using the MIPO technique in a series of patients from three hospital units in Ecuador, Paraguay, and Brazil. Materials and Methods: A retrospective, longitudinal, observational study of data from 133 patients collected in 3 services in Quito, Ecuador; Asunción, Paraguay; and Passo Fundo, Brazil. The distributions between different services were compared using Pearson’s chisquare test. Results: The age of the patients ranged from 17 to 76 years, with a mean of 36 years. The median time to union which occurred in 126 of the 132 patients, was 11 weeks. Most of the patients were male (70.45%), the right side was the most affected (55.3%), most of the fractures were single (85.61%), consolidation occurred in 95.45% of cases, complications occurred only in 9.09% of patients, 6.82% of them were severe. In relation to complications, they were divided according to the absence (87.12%) or presence of the following: post-surgical neuropraxia (0.76%), infection (3.03%), and pseudarthrosis (4.55%). Conclusion: The MIPO technique for the treatment of diaphyseal fractures of the humerus presents low rates of complications and morbidity, demonstrating good rates of consolidation.

5-Aryl-3-(2-methoxynaphthalen-6-yl)-1-phenylpyrazoline derivatives were synthesized starting from (E)-1-(3-aryl)-(2-methoxynaphthalen-6-yl)-prop-2-en-1-one and phenylhydrazine. The compounds were characterized by 1H and 13C nuclear magnetic resonance (NMR), elemental analyses and mass spectrometry. Some compounds showed promising luminescence properties in solution and in solid state; the absorption and emission characteristics were measured and the fluorescence quantum yield of two of the derivatives [4,5-dihydro-3-(2-methoxynaphthalen-6-yl)-5-(3,4,5-trimethoxyphenyl)-1-phenyl-1 H -pyrazoline and 5-(4-chlorophenyl)-4,5-dihydro-3-(2-methoxynaphthalen-6-yl)-1-phenyl-1 H -pyrazoline] were found to have excellent values compared to rhodamine B standard. Theoretical calculations at time-dependent density functional theory (TD-DFT) level are in agreement with the experimental measurements and are helpful to explain the electronic behavior.