Pediatric Radiology

, Volume 33, Issue 7, pp 475–481 | Cite as

Ultrasound screening for developmental dysplasia of the hip

  • Giuseppe Riboni
  • Aldo Bellini
  • Sergio Serantoni
  • Elena Rognoni
  • Luigi BisantiEmail author
Original Article



Clinical examination of newborns has been shown to be inadequate for the early detection of developmental dysplasia of the hip (DDH). It is debatable whether US examination is a valid alternative.


To contribute further knowledge to the natural history of DDH; to examine the distribution of hip morphology as classified by Graf according to sex and risk factors in an unselected Italian population; to propose a temporal pattern of US screening of all newborns to detect DDH.

Materials and methods

All newborns (n=8,896) sequentially delivered in the Maternal and Child Health Hospital of Milan underwent US examination in the first week of life and, when findings were within normal limits, in the third month of life. Subjects categorised at birth as Graf type 2a with α angle between 50° and 52°, underwent a further US examination at the end of the first month of life. Subjects with ambiguous findings at the 3-month examination were re-examined at the end of the fourth month of life. All infants with abnormal hips abandoned the screening process and underwent treatment.


Overall, 56 cases of DDH were identified: 34 in the first week of life examination, 10 at 1 month; 10 at 3 months and 2 at 4 months.


A two-step US screening of newborns is recommended: at the end of the first month and within the fourth month of life.


Ultrasound Hip Developmental dysplasia 


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Copyright information

© Springer-Verlag 2003

Authors and Affiliations

  • Giuseppe Riboni
    • 1
  • Aldo Bellini
    • 2
  • Sergio Serantoni
    • 1
  • Elena Rognoni
    • 1
  • Luigi Bisanti
    • 2
    Email author
  1. 1.Department of RadiologyMacedonio Melloni Hospital
  2. 2.Department of EpidemiologyLocal Health Authority

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