==Planning==
;Choice {{Hip dysplasia - choice of modality[[Ultrasonography of hip dysplasia]] yields better results defining the anatomy until the cartilage is ossified. When the infant is around 3 months old a clear roentgenographic image can be achieved. Unfortunately, the time at which the joint gives a good x-ray image is also the point at which nonsurgical treatment methods cease to give good results.}}
;Image quality checking