Fracturas complejas intrarticulares del radio distal. Su tratamiento mediante fijación externa.

Se presentan 135 casos de fractura compleja de radio distal tratadas con fijador externo. Los resultados funcionales fueron buenos o excelentes en 95 de los 135 casos (70,3%). Los resultados radiológicos fueron buenos en 78 de los 135 pacientes (57,8%). Dado el alto porcentaje de fracasos tanto clínicos como radiológicos registrados en nuestra casuística, consideramos que el método debe ser utilizado con precaución, siguiendo una técnica meticulosa que evite las complicaciones relacionadas con su uso.135 cases of complex fracture of the distal radius treated with external fixation are presented. Functional results were good or excellent in 95 of the 135 cases (70,3 %). Radiological results were good in 78 of the 135 patients (57,8 %). In view of the high percentage of both clinical and radio- logical failures observed in our casuistry, we think that the method must be used cautiously, using a careful technique that avoids the complications related to its utilization

Reducción cerrada y osteosíntesis con agujas percutáneas en las fracturas del radio distal

Se presentan 185 casos de fractura compleja del radio distal tratados con reducción ortopédica y estabilización con agujas de Kirschner introducidas de forma percutánea y asociadas a vendaje escayolado antebraquial. Los resultados funcionales finales fueron buenos o excelentes en 156 de los 185 casos (84,3%). Teniendo en cuenta los resultados, consideramos que el método es sencillo, útil y económico y debe valorarse su uso en la mayoría de las fracturas del radio distal.We report 185 cases of distal radius fractures treated by closed reduction and percutaneous Kirschner wire fixation. Final functional results were good or excellent in 156 of the 185 cases (84,3%). In view of the results, we think that the method is simple, useful and cheap, and must value its use in the majority of the distal radius fractures

La fractura-luxación de Monteggia.Tratamiento y pronóstico. A propósito de 35 casos.

Estudio retrospectivo de 35 casos de fractura-luxación de Monteggia tratados entre los años 1990 y 2003. Los resultados fueron satisfactorios en 29 pacientes, regulares en 4 casos y malos en los 2 restantes. Conclusiones: El tratamiento de esta lesión debe ser ortopédico en pacientes en edad infantil. En los adultos, por el contrario, el tratamiento debe ser quirúrgico y consistir en una osteosíntesis estable de la fractura del cúbito, a poder ser con una placa tipo DCP. La reducción de la luxación de la cabeza del radio debe intentarse siempre de forma ortopédica pues los resultados así conseguidos son mejores. Si no es posible, puede intentarse la reducción abierta, evitando siempre que sea posible la exéresis de la cabeza radial. Por otra parte, el diagnóstico y el tratamiento deben realizarse lo más precozmente posible para poder obtener un buen resultado funcional.We present a retrospective study of 35 cases of Monteggia fracture-dislocation treated between the year 1990 and 2003. The results were satisfactory in 29 patients, intermediate in 4 cases and poor in the 2 remaining ones. Conclusions: Treatment of this injury must be orthopaedic in childhood. In the adults, on the contrary, the treatment must be surgical and to consist of a stable osteosynthesis of the fracture of the ulna with a DCP type plate. Reduction of the head of the radius dislocation must be always tried by orthopaedic methods since the results like that obtained are better. If it is not possible, the open reduction can be tried, avoiding providing that there is possible the resection of the radial head. On the other hand, diagnosis and treatment must fulfil early to be able to obtain a good functional result

La osteosíntesis con placa volar como tratamiento de las fracturas complejas del radio distal

Se presentan 45 casos de fractura compleja del radio distal tratados mediante reducción abierta y osteosíntesis con placa palmar. Los resultados fueron satisfactorios en 42 casos (93,3 %), con pocas complicaciones durante su evolución45 cases of complex fracture of the distal radius are presented. They were treated by open reduction and stable fixation with a volar plate. The results were satisfactory in 42 cases (93,3 %), with few complications during their evolution

Fracturas del radio distal tipo B3. Tratamiento quirúrgico.

Se presentan 67 casos de fractura de radio distal tipo B3 tratadas en nuestro Servicio. Se utilizó como método de osteosíntesis una placa palmar en 30 casos, agujas de Kirschner en 19 casos, fijadores externos en 17 y fijador externo + agujas en 1 caso. Los mejores resultados se obtuvieron en el grupo de casos tratados con placa palmar (90 % de resultados satisfactorios).A total of 67 cases of B3 type fracture of the distal radius treated in our Department are presented. A volar plate was used as fixation method in 30 cases, Kirschner wire in 19 cases, external fixator in 17 cases, and external fixator plus Kirschner wire in 1 case. The best results were obtained in the group of cases treated with a volar plate (90 percent of sa- tisfactory results)

Impact performance of out of die UV cured pultruded profiles for vessel structures

The main objective of FIBRE4YARDS project is to maintain European global leadership in ship building and ship maintenance, through implementation of the Shipyard 4.0 concept in which advanced and innovative FRP manufacturing technologies are successfully introduced. This project has received funding from European Union's Horizon 2020 research and innovation programme under grant agreement n°101006860

Estimation of PM10-bound As, Cd, Ni and Pb levels by means of statistical modelling: PLSR and ANN approaches

Air quality assessment regarding metals and metalloids using experimental measurements is expensive and time consuming due to the cost and time required for the analytical determination of the levels of these pollutants. According to the European Union (EU) Air Quality Framework Directive (Directive 2008/50/EC), other alternatives, such as objective estimation techniques, can be considered for ambient air quality assessment in zones and agglomerations where the level of pollutants is below a certain concentration value known as the lower assessment threshold. These conditions occur in urban areas in Cantabria (northern Spain). This work aims to estimate the levels of As, Cd, Ni and Pb in airborne PM10 at two urban sites in the Cantabria region (Castro Urdiales and Reinosa) using statistical models as objective estimation techniques. These models were developed based on three different approaches: partial least squares regression (PLSR), artificial neural networks (ANNs) and an alternative approach consisting of principal component analysis (PCA) coupled with ANNs (PCA-ANN). Additionally, these models were externally validated using previously unseen data. The results show that the models developed in this work based on PLSR and ANNs fulfil the EU uncertainty requirements for objective estimation techniques and provide an acceptable estimation of the mean values. As a consequence, they could be considered as an alternative to experimental measurements for air quality assessment regarding the aforementioned pollutants in the study areas while saving time and resources.The authors gratefully acknowledge the financial support from the Spanish Ministry of Economy and Competitiveness through the Project CMT2010-16068. The authors also thank the Regional Environment Ministry of the Cantabria Government for providing the PM10 samples at the Castro Urdiales and Reinosa sites