[Perthe's disease, results of conservative treatment (author's transl)].

After a survey of causation, symptoms and therapy of Perthe's disease, clinical and radiographic findings of 62 children treated conservatively are described. For evaluation the "plumpness quotient" is introduced, in addition to the known radius-, joint-surface- and epiphysus quotients, as a measure of deformity of head and neck of femur. Besides consequential avoidance of weight-bearing, age, length of history and first radiologic findings are of decisive importance. The results of conservative treatment are no worse than those of surgery.