[Sonographically monitored hip dysplasia].

A report is presented of the possibilities that sonography offers in the investigation of the hip joint in newborn babies and infants. On the basis of experience gained over the past 6 years in the investigation of over 5000 infant hips, it is possible to produce an exact classification of disorders of hip maturation. Sonography renders possible the early recognition of hip maturation disorders, selection of optimal form of treatment and control of the adopted therapy. Sonography is, therefore, not limited to a mere depiction of the hip joint, but renders possible direct control of the therapeutic procedure. However, an introduction to the examination and measurement technique is indispensable.