It is suspected that an abnormality of gravity sway is involved in the etiology of idiopathic scoliosis. We evaluated 20 patients with idiopathic scoliosis using a gravicorder to assess their gravity sway. Gravity sways were recorded in the anteroposterior and lateral direction and assessed by autoregressive and component-wave analysis. Gravity sways were influenced by past sways for 250-270msec. The sway of idiopathic Scoliosis revealed significant differences in the anteroposterior direction.
