Scoliosis even when untreated, with mortality rates similar to the general population. Older beliefs that untreated idiopathic scoliosis necessarily progresses into severe (cardiopulmonary) disability by old age have been refuted by later studies. The many causes of scoliosis include spinal deformities, neuromuscular problems, and inherited diseases or conditions caused by the environment. An estimated 65% of scoliosis cases are idiopathic, about 15% are congenital, and about 10% are secondary to a neuromuscular disease. Idiopathic scoliosis represents a majority of cases, but its causes are largely unknown. Recent studies indicate potential heritability of the disorder. About 38% of variance in scoliosis risk
Scoliosis in life secondary to degenerative (may or may not be associated with aging) changes. This is a type of deformity that starts and progresses because of the collapse of the vertebral column in an asymmetrical manner. People who initially present with scoliosis undergo physical examination to determine whether the deformity has an underlying cause and to exclude the possibility of underlying condition more serious than simple scoliosis. The person's gait is assessed, with an exam for signs of other abnormalities (e.g., spina bifida as evidenced by a dimple, hairy patch, lipoma, or hemangioma). A thorough neurological examination is also performed,