The term scoliosis has originated from Greek word skolios which was used to denote crooked.
Scoliosis is a condition in which a person’s spine has an abnormal curvature from side to side. For definition purpose the deformity should be greater than 10 degrees.
In a normal individual the spine, when viewed from the rear, looks straight. However the spine of an individual with scoliosis may look more like an “S” or a “C” depending on the direction of abnormal curves.