title: Early detection of developmental dysplasia of the hip in The Netherlands: the validity of a standardized assessment protocol in infants.
abstract: OBJECTIVE
  This study evaluated the validity of the traditionally recommended screening protocol for developmental dysplasia of the hip in infants.
  
  
  METHODS
  Study children (n = 1968) underwent a standardized screening examination.
  
  
  RESULTS
  The incidence of developmental dysplasia of the hip was 3.7%. The sensitivity of the test protocol was 86%, the specificity was 82%, and the predictive values of positive and negative tests were 16% and 99%, respectively.
  
  
  CONCLUSIONS
  The validity of the screening protocol for developmental dysplasia of the hip is disappointingly low. The yield of adding an ultrasonographic examination to current screening activities needs further study.
authors.affiliation: Organisation for Home Care, Hengelo, The Netherlands.
authors.forename: M M
authors.initials: MM
authors.lastname: Boere-Boonekamp
authors.forename: T H
authors.initials: TH
authors.lastname: Kerkhoff
authors.forename: P B
authors.initials: PB
authors.lastname: Schuil
authors.forename: G A
authors.initials: GA
authors.lastname: Zielhuis
mesh_terms: D005260:Female; D006618:Hip Dislocation, Congenital / Q000175:diagnosis* / Q000000981:diagnostic imaging; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D008297:Male; D015997:Neonatal Screening; D009426:Netherlands; D011237:Predictive Value of Tests; D011446:Prospective Studies; D012680:Sensitivity and Specificity; D014463:Ultrasonography