Scoliosis
Double Major Curve
A Scoliosis double major curve is defined as two lateral curvatures (Scoliosis) in the same spine.
Double major curve describes a Scoliosis in which there are two structural curves which are usually of equal size.
Double thoracic curve a Scoliosis with a structural upper thoracic curve, as well as a larger, more deforming lower thoracic curve, and a relatively nonstructural lumbar curve.

Scoliosis Double Major Curve