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- Pulmonary function and respiratory muscle strength after arthrodesis of the spine in patients who have adolescent idiopathic scoliosisPublication . Lopes, A. A.; Flores, F.; Ribeiro, F.; Oliveira, A.Adolescent idiopathic scoliosis (AIS) is the most common type of scoliosis, affecting children from the age of 10. In addition to back pain, poor self-perceived health, reduced social participation and cosmetic issues, severe thoracic curves are also strongly associated with reduced pulmonary function. When the scoliosis is severe (Cobb angles above 45–50°) and conservative treatment is not sufficient, surgical management is considered to correct the spinal deformity, maintain/enhance pulmonary function, minimize pain and morbidity. Previous studies assessing the impact of posterior spinal fusion in AIS patients have showed that pulmonary function improved, decreased, or remained unchanged after surgery. In general, the studies did not assess respiratory muscle strength, which could also be impaired due to the biomechanics changes of the spine and thoracic cage. Therefore, this study aimed to evaluate pulmonary function and respiratory muscle strength three months after corrective surgery for AIS.
- Preoperative pulmonary function and respiratory muscle strength in Portuguese adolescents with idiopathic scoliosisPublication . Flores, F.; Cavaleiro, J.; Lopes, Alfredo; Ribeiro, F.; Oliveira, A.Carta enviada ao editor da revista Revista Portuguesa de Pneumologia (English Edition). Idiopathic scoliosis is a 3-dimensional deformity of the spine, with direct effects on the thoracic cage, characterized by the lateral displacement (greater than 10◦) and rotation of vertebral bodies during periods of rapid somatic growth.1 Adolescent idiopathic scoliosis (AIS) is found between the age of 10 and skeletal maturity2 and its prevalence is estimated at 2---4% in children between 10 and 16 years of age.2,3 This condition encompasses several complications including back pain, poor body image, and impaired pulmonary function.3 In fact, previous studies have shown a decreased pulmonary function in adolescents with idiopathic scoliosis,4 and an inverse correlation between scoliosis Cobb angles and pulmonary function.4 Adolescents with severe scoliosis, with Cobb angles above 45---50◦, are routinely managed with spinal fusion surgery.3 In addition to the mechanical restriction to ventilation, changes in spine and thoracic cage position may alterthe length ofrespiratory muscles influencing the ability to generate tension.