[Echography in hip dysplasia in neonates and infants. Echographic anatomy, technic and case material].

The value of hip joint sonography in newborns and unweaned infants is the latest development in the diagnosis of hip dysplasia. Knowledge of the sonographic anatomy makes accurate examination and staging according to Graf's tables possible. Since sonography is non-invasive it can be used for screening and check-up, thus reducing the use of radiography. A personal series of 250 patients is presented.