title: Values for bony acetabular roof angle and percentage femoral head cover in a selective ultrasound neonatal hip-screening programme: effect of age, sex and side.
abstract: Published maturation curves for bony acetabular roof or α angle (AA) and percentage femoral head cover (FHC) with age are sparse. We aimed to determine typical values for AA and FHC in 2236 infants referred to a selective ultrasound screening programme. There was increase in the values of first measurement of AA and FHC related to the logarithm of age. Males had greater values than females (P<0.001) and right hips had greater values than left (P<0.001) for both measurements. Significant side differences have not been reported previously. Treatment decisions should be made on the basis of sex, side and age-specific data.
authors.affiliation: Departments of Radiology.
authors.forename: A Graham
authors.initials: AG
authors.lastname: Wilkinson
authors.affiliation: Physiotherapy, Royal Hospital for Sick Children.
authors.forename: Sally
authors.initials: S
authors.lastname: Wilkinson
authors.affiliation: Medical School, Centre for Population Health Sciences, University of Edinburgh, Edinburgh, UK.
authors.forename: Robert A
authors.initials: RA
authors.lastname: Elton
mesh_terms: D000077:Acetabulum / Q000000981:diagnostic imaging*; D000367:Age Factors; D005260:Female; D005270:Femur Head / Q000000981:diagnostic imaging*; D006618:Hip Dislocation, Congenital / Q000000981:diagnostic imaging* / Q000453:epidemiology; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D008297:Male; D015997:Neonatal Screening / Q000379:methods* / Q000592:standards; D011446:Prospective Studies; D012737:Sex Factors; D018084:Ultrasonography, Interventional / Q000379:methods* / Q000592:standards