Prenatal Screening for Developmental Displacement of the Hip: The BUDDHA (Pre-Birth Ultrasound for Developmental Displacement of the Hip Assessment) Study.

Background: developmental dysplasia of the hip has an incidence of 3-5 out of 1000 children. Currently, only postnatal screening is available.

Objective: to test the feasibility of a method based on Graf technique application at antenatal ultrasound in assessing the normal development of the hip in unselected term fetuses.