A retrospective study of functionality of patients with distal radius fracture after osteosynthesis with an LCP volar plate

Distal radius fractures are the most common fractures of the human skeleton, accounting for one sixth of all fractures. For his treatment, there are several surgical techniques and synthesizing materials that can be used, however, the use of a volar plate has been proven effective and haspresented few complications. Objective: Here was to make a retrospective study of thefunctionality of patients with distal radius fracture after internal fixation with an LCP volar plate that went through a rehabilitation program. Method: The sample consisted of 14 patients with unilateral distal radius fracture who underwent internal fixation with a 2.4 mm or 3.5 mm LCP volar plate who completed 1 year after surgery in 2010. The subjects were divided into two groups: affected group (n = 14), composed of fractured wrists; control group (n = 14) composed of the contralateral wrists. Measurements were made of active and passive range of motion (ROM) of the wrist, grip strength, pinch grip strength, and a questionnaire of disabilities of the arm, shoulder, and hand (DASH). The data was analyzed to compare the affected and controlgroups, through tests of significance of two independent samples for means. Results: The average for the DASH questionnaire was 10.63 points (± 12.23). For measures of grip strength, pinch grip strength, and ROM, there were no significant differences in comparison groups (p > 0.05). Conclusion: We concluded that after one year post-surgery, patients showed similar results when comparing the wrists, which shows a satisfactory recovery of functional status.As fraturas do rádio distal estão entre as mais comuns do esqueleto humano, correspondendo a um sexto de todas as fraturas. Para seu tratamento, existem diversas técnicas cirúrgicas e materiais de síntese que podem ser utilizados, no entanto, o uso de placa volar tem se mostrado eficiente e apresentado poucas complicações. Objetivo: Realizar uma análise retrospectiva do estado funcional de pacientes com fratura do radio distal submetidos à osteossíntese com placa volar LCP que passaram por um programa de reabilitação. Método: A amostra foi composta por 14 pacientes com fratura unilateral de rádio distal submetidosàosteossíntese com placa volar LCP 2,4 mm ou 3,5 mm. Os indivíduos foram divididos em dois grupos: grupo acometido (n = 14), composto pelos punhos fraturados; grupo controle (n = 14) composto pelos punhos contralaterais. Foram realizadas medidas de amplitude de movimento (ADM) ativa e passiva do punho, força de preensão e pinças e aplicado um questionário de disfunção do membro superior (DASH). Para a análise dos dados, foi realizada comparação entre os grupos, acometido e controle, por meio de testes de significância de duas amostras independentes para médias. Resultados: A média encontrada para o questionário DASH foi de 10,63 pontos (± 12,23). Em relação às medidas de força de preensão e pinças, e de ADM de punho, não houve diferenças significantes na comparação entre os grupos (p > 0,05). Conclusão: Na amostra analisada, pode-se concluir que, após um ano de pós-operatório, os pacientes apresentam resultados semelhantes na comparação, o que evidencia uma recuperação satisfatória do estado funcional

Reconstructing Three Decades of Land Use and Land Cover Changes in Brazilian Biomes with Landsat Archive and Earth Engine

Brazil has a monitoring system to track annual forest conversion in the Amazon and most recently to monitor the Cerrado biome. However, there is still a gap of annual land use and land cover (LULC) information in all Brazilian biomes in the country. Existing countrywide efforts to map land use and land cover lack regularly updates and high spatial resolution time-series data to better understand historical land use and land cover dynamics, and the subsequent impacts in the country biomes. In this study, we described a novel approach and the results achieved by a multi-disciplinary network called MapBiomas to reconstruct annual land use and land cover information between 1985 and 2017 for Brazil, based on random forest applied to Landsat archive using Google Earth Engine. We mapped five major classes: forest, non-forest natural formation, farming, non-vegetated areas, and water. These classes were broken into two sub-classification levels leading to the most comprehensive and detailed mapping for the country at a 30 m pixel resolution. The average overall accuracy of the land use and land cover time-series, based on a stratified random sample of 75,000 pixel locations, was 89% ranging from 73 to 95% in the biomes. The 33 years of LULC change data series revealed that Brazil lost 71 Mha of natural vegetation, mostly to cattle ranching and agriculture activities. Pasture expanded by 46% from 1985 to 2017, and agriculture by 172%, mostly replacing old pasture fields. We also identified that 86 Mha of the converted native vegetation was undergoing some level of regrowth. Several applications of the MapBiomas dataset are underway, suggesting that reconstructing historical land use and land cover change maps is useful for advancing the science and to guide social, economic and environmental policy decision-making processes in Brazil

Resumos concluídos - Neurociências

Resumos concluídos -  Neurociência