Scoliosis is a condition involving an abnormal sideways curvature of the spine. It can be caused by congenital, developmental or degenerative problems, but most cases of scoliosis actually have no known cause called idiopathic scoliosis. Scoliosis usually develops in the thoracic spine or the thoracolumbar area of the spine. The curvature of the back may develop as a single curve (shaped like the letter C) or as two curves (shaped like the letter S). Scoliosis appears during adolescence and indicators include unevenness in the shoulder height, shoulder blades, rib cages and hips. For adolescents, treatment usually involves bracing treatment with a thoracolumbar sacral orthosis brace or Charleston bending brace to stop curve progression.