[Ultrasonic examination of the hip joint in neonates and infants].

Sonography is a new procedure in the examination of the hip of newborns and infants. With this harmless, objective, image producing method, that can be used immediately after birth, the cartilaginous and bony development of the acetabulum, the intraarticular position of the femoral head, its coverage and its beginning decentralization, luxation can be investigated. With the use of this method such informations may be gained by the reproducible and image representation of the non osseous constituents of the joint that can otherwise be hoped previously only from invasive X-ray methods, meaning also radiological loading. This method must be considered of having great significance not only in the very early detection of dysplasias, but in the choice of the time and period of treatment and in the following of its effectiveness.