Fig. (6) The patient has to be instructed to maintain proper posture. a. the patient nine years of age sits with the back slouched. The left thoracic curve is evident. b. the patient attempts to sit straight with the lumbar in physiological lordosis. It is evident that the curve slightly reduces, despite mild compensation in the pelvis. c. kneeling with the right knee forward increases the left scoliosis curvature, whereas kneeling with the left knee forward (d) reduces the curvature.