Imaging in congenital dislocation and dysplasia of the hip.

Selection of imaging techniques in patients with congenital dislocation or dysplasia of the hip (CDH) depends on the age of the child and whether one is seeking diagnostic or management information. Ultrasound is effective in children up to one year of age and should be used in place of most roentgenograms. Arthrography and computed tomography are used when surgery is planned. Magnetic resonance imaging is still being evaluated for diagnosis of CDH.