Figure 3
From: Spinal deformities rehabilitation - state of the art review
New Power Schroth' exercise using postural synergy effects. Outer rotation of the arm of the thoracic convex side improves derotation and redression of the rib-hump on the same side. Inner rotation of the arm of the thoracic concave side improves kyphosation on the thoracic concave side, which is the 'flatback side' of the curve.