[Natural course in idiopathic scoliosis].

We still do not know enough about the natural course of untreated idiopathic scoliosis although more knowledge would be desirable from the point of view of deciding on adequate conservative treatment or operative therapy. We present the natural course of 110 cases of marked scoliosis and 135 cases of slight, untreated scoliosis with respect to age, sex and localization of the curve. The results are compared to those of other authors.