[Orthopedic methods used in the treatment of scoliosis].

This paper describes the various technics of orthopedic surgery currently used to correct scoliosis and maintain correction. Among corrective methods they illustrate the use of the Cotrel plaster corset (E.D.F.) preceded by passive bipolar traction and autoelongation. Once correction is achieved, it must be maintained to the end skeletal growth; this is done with various types of orthopedic corsets (Lyonnais, La Padula, Milwaukee), which are used according to the patient's age and anatomical type of deformity. The authors discuss in particular the forces that are applied to the occiput and mandible with the Milwaukee corset (Logan, Cochran and Waugh), the values being recorded in diverse situations including the upright stance, ambulation, sitting position, position, supine position, and sleep (Galante, 1970). The authors also made a comparative study of the conventional Milwaukee corset (with broad chin bearing) versus the Milwaukee with hyoid bearing; and finally they illustrate the results obtained by Andriacchi and his associates in selecting the Milwaukee corset for patients with idiopathic scoliosis on the basis of the mathematical model of the rachis.