Determining the specific type of a thorax deformity could be considered a type-related physiotherapy as conservative treatment or vacuum treatment and if surgery is indicated a type-related surgical correction can be performed. A type-related and adapted surgical correction can prevent subsequent mitral valve prolapse, recurrent infections, vertebral disturbances caused by kypho-scoliosis and increasing psychological irritation. Typing chest-deformities are an additional and essential help for the surgeon to perform specific surgical procedures: detorsion of the sternum, correction of the sterno-costal region, the costal arch bow and the kind of chest wall immobilization by metal struts. It can also compare the postoperative results more accurately in similar types of chest-deformities.