Antonio Miguel - Academia.edu (original) (raw)

Papers by Antonio Miguel

Research paper thumbnail of Intraoperative Incidents and Complications in Primary Arthroscopic Anterior Cruciate Ligament Reconstruction

Arthroscopy: The Journal of Arthroscopic & Related Surgery, 2006

To analyze intraoperative incidents and complications in primary arthroscopic anterior cruciate l... more To analyze intraoperative incidents and complications in primary arthroscopic anterior cruciate ligament reconstruction (ACLR) with bone-patellar tendon-bone (BPTB) and quadruple hamstring semitendinosus and gracilis (STG) grafts. Methods: From January 1999 to June 2004, we performed 330 BPTB and 96 STG procedures. Intraoperative incidents and complications were recorded for each case. Results: Our overall intraoperative incident and complication rate was 9.6% and was higher in the STG group (13.5%) than in the BPTB group (8.7%). In the BPTB group, combined incidents and complications according to stage of the procedure consisted of graft harvesting, 4 cases (1.21%); tunnel placement, 9 cases (2.7%); and graft fixation, 15 cases (4.5%). In the STG group, combined incidents and complications included graft harvesting, 8 cases (8.3%); tunnel placement, 1 case (1%); graft fixation, 3 cases (3.1%); and others, 1 case (1%). In 4 patients (0.9%), we had to change the technique from BPTB to STG and vice versa. In 2 STG cases, conversion of the technique was required because of graft-related problems; in the third case, it was necessary because of fixation. One BPTB was converted to STG because the graft was completely transected as a result of improper screw fixation technique. Conclusions: None of the encountered incidents and complications had an adverse effect on final stability or on range of motion in operated knees. All incidents and complications were due to technical errors that occurred during graft harvesting, tunnel placement, or graft fixation. It is known that technical errors are preventable if careful surgical technique is followed. The surgeon must be well versed in various reconstruction techniques to be able to detect and resolve forthcoming incidents or complications. Backup implants are mandatory. Level of Evidence: IV, therapeutic case series.

Research paper thumbnail of TSG 23: The role of the history of mathematics in mathematics education

Research paper thumbnail of Cáncer de cuello uterino: determinación del contenido de ADN mediante citofotometría

Research paper thumbnail of School practices of mathematical culture mobilization

Research paper thumbnail of A terceira margem–notas breves sobre a representação do espaço no trabalho do historiador

Research paper thumbnail of Notas introdutórias à discussão do conceito kantiano de espaço

Research paper thumbnail of A categoria de" espaço" em psicologia

Research paper thumbnail of Desconstruindo a matemática escolar sob uma perspectiva pós-metafísica de educação

Research paper thumbnail of História da matemática em atividades didáticas

Research paper thumbnail of Os logaritmos na cultura escolar brasileira

Research paper thumbnail of O Ensino de Matemática no 1º grau

Research paper thumbnail of História da Matemática em atividade didáticas

Research paper thumbnail of O Ensino de Matemática no primeiro grau

Research paper thumbnail of História na educação matemática: propostas e desafios

Research paper thumbnail of Princípios para as Licenciaturas: uma reflexão sobre a formação de professore de Matemática, Química e Física

Research paper thumbnail of A educação matemática: breve histórico, ações implementadas e questões sobre sua disciplinarização

Page 1. Antonio Miguel, Antonio Vicente Marafioti Garnica, Sonia Barbosa Camargo Igliori e Ubirat... more Page 1. Antonio Miguel, Antonio Vicente Marafioti Garnica, Sonia Barbosa Camargo Igliori e Ubiratan D'Ambrósio 70 Set /Out /Nov /Dez 2004 No 27 Introdução Este trabalho foi elaborado em tópicos autôno-mos. Seu título, entretanto ...

Research paper thumbnail of Áreas e subáreas do conhecimento, vínculos epistemológicos: o GT de Educação Matemática da ANPEd

Revista Brasileira de Educação, 2008

Research paper thumbnail of Mudanças climáticas e ambientais e as doenças infecciosas: cenários e incertezas para o Brasil

Epidemiologia e Serviços de Saúde, 2009

Research paper thumbnail of Urban air pollution in Brazil: Acetaldehyde and other carbonyls

Atmospheric Environment. Part B. Urban Atmosphere, 1990

Abstrset--We have measured ambient levels of carbonyls in three major urban areas of Brazil: Sao ... more Abstrset--We have measured ambient levels of carbonyls in three major urban areas of Brazil: Sao Paulo, Rio de Janeiro and Salvador. The most abundant carbonyls were acetaldehyde (up to 63/lg m-3, or 35 ppb) followed by formaldehyde (up to 42/tgm -3, or 34 ppb), and acetone (up to 20 ppb). Levels of l0 other aliphatic and aromatic carbonyls were in the range 0-5 ppb. Total carbonyl concentrations were in the range 11-75 ppb. Indoor levels were also measured at several locations in Salvador. High levels of acetaldehyde, 430/~g m-3 or 240 ppb, were measured in a highway tunnel.

Research paper thumbnail of SPRING and TerraLib: Integrating Spatial Analysis and GIS

This work describes the development of a SPRING and TerraLib, two tools for integrating spatial a... more This work describes the development of a SPRING and TerraLib, two tools for integrating spatial analysis in a GIS environment. SPRING is an established freeware GIS, available on the Internet, which includes functions for geostatistics, point pattern analysis and exploration of area data. TerraLib a GIS library, a new development by INPE, that is aimed at providing a rich and

Research paper thumbnail of Intraoperative Incidents and Complications in Primary Arthroscopic Anterior Cruciate Ligament Reconstruction

Arthroscopy: The Journal of Arthroscopic & Related Surgery, 2006

To analyze intraoperative incidents and complications in primary arthroscopic anterior cruciate l... more To analyze intraoperative incidents and complications in primary arthroscopic anterior cruciate ligament reconstruction (ACLR) with bone-patellar tendon-bone (BPTB) and quadruple hamstring semitendinosus and gracilis (STG) grafts. Methods: From January 1999 to June 2004, we performed 330 BPTB and 96 STG procedures. Intraoperative incidents and complications were recorded for each case. Results: Our overall intraoperative incident and complication rate was 9.6% and was higher in the STG group (13.5%) than in the BPTB group (8.7%). In the BPTB group, combined incidents and complications according to stage of the procedure consisted of graft harvesting, 4 cases (1.21%); tunnel placement, 9 cases (2.7%); and graft fixation, 15 cases (4.5%). In the STG group, combined incidents and complications included graft harvesting, 8 cases (8.3%); tunnel placement, 1 case (1%); graft fixation, 3 cases (3.1%); and others, 1 case (1%). In 4 patients (0.9%), we had to change the technique from BPTB to STG and vice versa. In 2 STG cases, conversion of the technique was required because of graft-related problems; in the third case, it was necessary because of fixation. One BPTB was converted to STG because the graft was completely transected as a result of improper screw fixation technique. Conclusions: None of the encountered incidents and complications had an adverse effect on final stability or on range of motion in operated knees. All incidents and complications were due to technical errors that occurred during graft harvesting, tunnel placement, or graft fixation. It is known that technical errors are preventable if careful surgical technique is followed. The surgeon must be well versed in various reconstruction techniques to be able to detect and resolve forthcoming incidents or complications. Backup implants are mandatory. Level of Evidence: IV, therapeutic case series.

Research paper thumbnail of TSG 23: The role of the history of mathematics in mathematics education

Research paper thumbnail of Cáncer de cuello uterino: determinación del contenido de ADN mediante citofotometría

Research paper thumbnail of School practices of mathematical culture mobilization

Research paper thumbnail of A terceira margem–notas breves sobre a representação do espaço no trabalho do historiador

Research paper thumbnail of Notas introdutórias à discussão do conceito kantiano de espaço

Research paper thumbnail of A categoria de" espaço" em psicologia

Research paper thumbnail of Desconstruindo a matemática escolar sob uma perspectiva pós-metafísica de educação

Research paper thumbnail of História da matemática em atividades didáticas

Research paper thumbnail of Os logaritmos na cultura escolar brasileira

Research paper thumbnail of O Ensino de Matemática no 1º grau

Research paper thumbnail of História da Matemática em atividade didáticas

Research paper thumbnail of O Ensino de Matemática no primeiro grau

Research paper thumbnail of História na educação matemática: propostas e desafios

Research paper thumbnail of Princípios para as Licenciaturas: uma reflexão sobre a formação de professore de Matemática, Química e Física

Research paper thumbnail of A educação matemática: breve histórico, ações implementadas e questões sobre sua disciplinarização

Page 1. Antonio Miguel, Antonio Vicente Marafioti Garnica, Sonia Barbosa Camargo Igliori e Ubirat... more Page 1. Antonio Miguel, Antonio Vicente Marafioti Garnica, Sonia Barbosa Camargo Igliori e Ubiratan D'Ambrósio 70 Set /Out /Nov /Dez 2004 No 27 Introdução Este trabalho foi elaborado em tópicos autôno-mos. Seu título, entretanto ...

Research paper thumbnail of Áreas e subáreas do conhecimento, vínculos epistemológicos: o GT de Educação Matemática da ANPEd

Revista Brasileira de Educação, 2008

Research paper thumbnail of Mudanças climáticas e ambientais e as doenças infecciosas: cenários e incertezas para o Brasil

Epidemiologia e Serviços de Saúde, 2009

Research paper thumbnail of Urban air pollution in Brazil: Acetaldehyde and other carbonyls

Atmospheric Environment. Part B. Urban Atmosphere, 1990

Abstrset--We have measured ambient levels of carbonyls in three major urban areas of Brazil: Sao ... more Abstrset--We have measured ambient levels of carbonyls in three major urban areas of Brazil: Sao Paulo, Rio de Janeiro and Salvador. The most abundant carbonyls were acetaldehyde (up to 63/lg m-3, or 35 ppb) followed by formaldehyde (up to 42/tgm -3, or 34 ppb), and acetone (up to 20 ppb). Levels of l0 other aliphatic and aromatic carbonyls were in the range 0-5 ppb. Total carbonyl concentrations were in the range 11-75 ppb. Indoor levels were also measured at several locations in Salvador. High levels of acetaldehyde, 430/~g m-3 or 240 ppb, were measured in a highway tunnel.

Research paper thumbnail of SPRING and TerraLib: Integrating Spatial Analysis and GIS

This work describes the development of a SPRING and TerraLib, two tools for integrating spatial a... more This work describes the development of a SPRING and TerraLib, two tools for integrating spatial analysis in a GIS environment. SPRING is an established freeware GIS, available on the Internet, which includes functions for geostatistics, point pattern analysis and exploration of area data. TerraLib a GIS library, a new development by INPE, that is aimed at providing a rich and