Abstract: Apparatus to treat scoliosis, particularly idiopathic scoliosis. The apparatus has a pair of longitudinal struts whose separation can be adjusted. The cross member is pivotally attached to each strut. The apparatus can be secured to a patient's pelvic girdle. The cross member can be pivoted and thus move the patient's sacrum towards the innominate bones. The apparatus also provides a method to treat scoliosis in a patient that comprises repositioning the patient's sacrum to correct the anatomical position to restore the symmetry of the patient's pelvic girdle. The patient's sacrum is stabilized in its restored position by locating the sacrum to the iliac bone. The non-deformed vertebrae in the scoliotic curve is pulled by members attached to the ilium extending to the vertebrae procesus. The members are tensioned as required.