Clinical Orthopaedics and Related Research

, Volume 466, Issue 4, pp 771–775 | Cite as

Neonatal Incidence of Hip Dysplasia

Ten Years of Experience
  • Eli Peled
  • Mark Eidelman
  • Alexander Katzman
  • Viktor BialikEmail author
Symposium: Developmental Dysplasia of the Hip


The advantages of sonographic examination are well known, but its main disadvantage is that it might lead to overdiagnosis, which might cause overtreatment. Variations in the incidence of developmental dysplasia of the hip are well known. We ascertained the incidence of neonatal sonographic developmental dysplasia of the hip without considering the development of those joints during followup. All 45,497 neonates (90,994 hips) born in our institute between January 1992 and December 2001 were examined clinically and sonographically during the first 48 hours of life. Sonography was performed according to Graf’s method, which considers mild hip sonographic abnormalities as Type IIa. We evaluated the different severity type incidence pattern and its influence on the total incidence during and between the investigated years. According to our study, sonographic Type IIa has major effects on the incidence of overall developmental dysplasia of the hip with a correlation coefficient of 0.95, whereas more severe sonographic abnormalities show relatively stable incidence patterns.

Level of Evidence: Level I, prognostic study. See the Guidelines for Authors for a complete description of levels of evidence.


Developmental Dysplasia Sonographic Examination Incidence Pattern Sonographic Abnormality Graf Type 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.



We thank Mrs Myrna Perlmutter for her help in the preparation of the manuscript and Mrs Ronit Leiba for help with the statistical analysis. We are very grateful to the medical staff of the Neonatal Unit who performed all the routine clinical examinations.


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Copyright information

© The Association of Bone and Joint Surgeons 2008

Authors and Affiliations

  • Eli Peled
    • 1
    • 3
  • Mark Eidelman
    • 2
    • 3
  • Alexander Katzman
    • 2
    • 3
  • Viktor Bialik
    • 2
    • 3
    Email author
  1. 1.Department of Orthopedic Surgery BRambam Health Care CampusHaifaIsrael
  2. 2.Pediatric Orthopedics UnitRambam Health Care CampusHaifaIsrael
  3. 3.Bruce Rappaport Faculty of MedicineTechnion-Israel Institute of TechnologyHaifaIsrael

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