Currently scoliosis is defined as a lateral deviation of the normal vertical spine. But in fact, the curve is three-dimensional resulting in a complex deformity. Scoliosis is broadly classified into three major groups:
- Congenital scoliosis - a structural anomaly in the vertebrae.
- Neuromuscular - in which there is an imbalance of the function of the muscles leading on to structural deformity of spine.
- Idiopathic - in which the cause is not yet known.