Radiographic Analysis of Intra-articular Fractures of the Calcaneus in patients undergoing Minimally Invasive Surgical Treatment in a Tertiary Hospital.

Objective This paper aims to evaluate patients with articular calcaneal fractures treated with a minimally invasive surgical technique between January 2015 and August 2016, with emphasis on radiographic results. Methods Retrospective study of 49 patients with 64 displaced calcaneal fractures treated with open reduction by minimal lateral access to the subtalar joint and minimal fixation. Pre- and postoperative radiographic studies were performed to measure the angles of Böhler and Gissane. Results The average angle of Böhler before surgery was 2.5°, increasing to an average value of 25.3° after the minimally invasive surgical treatment. The average angle of Gissane before surgery was 136.3°, decreasing to an average value of 114.3° after the procedure. Conclusion The minimally invasive surgical technique improves the radiographic parameters of intra-articular calcaneal fractures, with appropriate anatomical restoration of anatomical shape.

Radiographic Analysis of Intra-articular Fractures of the Calcaneus in patients undergoing Minimally Invasive Surgical Treatment in a Tertiary Hospital / Análise radiográfica de fraturas intra-articulares de calcâneo em pacientes submetidos a tratamento cirúrgico minimamente invasivo em hospital terciário

Abstract Objective This paper aims to evaluate patients with articular calcaneal fractures treated with a minimally invasive surgical technique between January 2015 and August 2016, with emphasis on radiographic results. Methods Retrospective study of 49 patients with 64 displaced calcaneal fractures treated with open reduction by minimal lateral access to the subtalar joint and minimal fixation. Pre- and postoperative radiographic studies were performed to measure the angles of Böhler and Gissane. Results The average angle of Böhler before surgery was 2.5º, increasing to an average value of 25.3º after the minimally invasive surgical treatment. The average angle of Gissane before surgery was 136.3º, decreasing to an average value of 114.3º after the procedure. Conclusion The minimally invasive surgical technique improves the radiographic parameters of intra-articular calcaneal fractures, with appropriate anatomical restoration of anatomical shape.

Resumo Objetivo Avaliar pacientes com fraturas intra-articulares de calcâneo tratados entre janeiro de 2015 e agosto de 2016 com técnica cirúrgica minimamente invasiva, com ênfase no resultado radiológico. Métodos Estudo retrospectivo de 49 pacientes com 64 fraturas intra-articulares de calcâneo, submetidos a tratamento cirúrgico minimamente invasivo. As lesões foram tratadas com redução aberta por acesso mínimo lateral à articulação subtalar e fixação mínima. Foi realizado estudo radiográfico no pré- e no pós-operatório para aferição dos ângulos de Böhler e de Gissane. Resultados O ângulo de Böhler médio dos casos antes da cirurgia foi de 2,5º, apresentando aumento da média dos ângulos para 25,3º após o tratamento cirúrgico minimamente invasivo. O ângulo de Gissane médio dos casos antes da cirurgia foi de 136,3º, apresentando diminuição da média dos ângulos para 114,3º na análise após a cirurgia. Conclusão A técnica cirúrgica minimamente invasiva permite melhora dos parâmetros radiográficos (ângulos de Böhler e Gissane) nas fraturas intra-articulares de calcâneo, com sua adequada recuperação da forma anatômica.

Assessment of regional lung ventilation by electrical impedance tomography in a patient with unilateral bronchial stenosis and a history of tuberculosis / Avaliacao da ventilacao pulmonar regional por tomografia de impedancia eletrica em paciente com estenose bronquica unilateral pos-tuberculose

Bronchial stenosis can impair regional lung ventilation by causing abnormal, asymmetric airflow limitation. Electrical impedance tomography (EIT) is an imaging technique that allows the assessment of regional lung ventilation and therefore complements the functional assessment of the lungs. We report the case of a patient with left unilateral bronchial stenosis and a history of tuberculosis, in whom regional lung ventilation was assessed by EIT. The EIT results were compared with those obtained by ventilation/perfusion radionuclide imaging. The patient was using nasal continuous positive airway pressure (CPAP) for the treatment of obstructive sleep apnea syndrome. Therefore, we studied the effects of postural changes and of the use of nasal CPAP. The EIT revealed heterogeneous distribution of regional lung ventilation, the ventilation being higher in the right lung, and this distribution was influenced by postural changes and CPAP use. The EIT assessment of regional lung ventilation produced results similar to those obtained with the radionuclide imaging technique and had the advantage of providing a dynamic evaluation without radiation exposure.

A estenose brônquica pode comprometer a ventilação pulmonar regional devido a limitações anormais e assimétricas ao fluxo aéreo. A tomografia de impedância elétrica (TIE) é uma técnica que possibilita a avaliação da ventilação pulmonar regional por imagem e, portanto, pode complementar a avaliação funcional dos pulmões. Relatamos o caso de uma paciente com estenose brônquica unilateral à esquerda, pós-tuberculose, em que se avaliou a ventilação pulmonar regional através da TIE, relacionando-a com a cintilografia de ventilação/perfusão. Foram estudados os efeitos das mudanças posturais e da aplicação de continuous positive airway pressure (CPAP, pressão positiva contínua nas vias aéreas) nasal, uma vez que a paciente usava esse tratamento para síndrome da apneia obstrutiva do sono. A TIE demonstrou distribuição heterogênea da ventilação pulmonar regional com maior ventilação no pulmão direito, sendo essa distribuição influenciada pelas mudanças de decúbitos e pela aplicação de CPAP. A análise da ventilação pulmonar regional pela TIE se mostrou similar aos achados da cintilografia pulmonar de ventilação com a vantagem de possibilitar uma avaliação dinâmica e sem exposição à radiação.

Assessment of regional lung ventilation by electrical impedance tomography in a patient with unilateral bronchial stenosis and a history of tuberculosis.

Bronchial stenosis can impair regional lung ventilation by causing abnormal, asymmetric airflow limitation. Electrical impedance tomography (EIT) is an imaging technique that allows the assessment of regional lung ventilation and therefore complements the functional assessment of the lungs. We report the case of a patient with left unilateral bronchial stenosis and a history of tuberculosis, in whom regional lung ventilation was assessed by EIT. The EIT results were compared with those obtained by ventilation/perfusion radionuclide imaging. The patient was using nasal continuous positive airway pressure (CPAP) for the treatment of obstructive sleep apnea syndrome. Therefore, we studied the effects of postural changes and of the use of nasal CPAP. The EIT revealed heterogeneous distribution of regional lung ventilation, the ventilation being higher in the right lung, and this distribution was influenced by postural changes and CPAP use. The EIT assessment of regional lung ventilation produced results similar to those obtained with the radionuclide imaging technique and had the advantage of providing a dynamic evaluation without radiation exposure.