[Three-dimensional ultrasound image of the infant hip].

Ultrasound imaging of the infant hip has gained wide acceptance, especially in diagnosis and therapy of infant hip dysplasias. Problems are the prognosis with regard to normal and pathological alpha-angle and treatment using cast, harness, or pillow. The well-known two-dimensional ultrasound techniques are not able to reproduce the correct relationship between femoral head and acetabulum. The use of the new three-dimensional technique is independent of the position of the infant hip. Although a special view into the acetabulum is possible, at present this method is not suitable for screening programs.