title: Frequency of developmental dysplasia of the hip in breech-presented Chinese neonates in Hong Kong.
abstract: OBJECTIVES. To clarify the use of ultrasonography by determining the frequency of developmental dysplasia of the hip among breech-presented Chinese neonates in Hong Kong. DESIGN. Prospective case series. SETTING. Regional hospital, Hong Kong. PATIENTS. All breech-presented Chinese neonates born during January 2008 to June 2009 were included (except premature neonates). They were examined clinically from birth till the age of 1 year. Ultrasound of the hips was performed at the age of 2 weeks, and X-ray of the pelvis at the age of 1 year. RESULTS. A total of 209 breech-presented neonates were born during the study period; 110 neonates completed all necessary investigations and follow-up. Among the latter, there were three neonates with developmental dysplasia of the hip warranting treatment, which amounted to a frequency of 2.7%. CONCLUSION. Developmental dysplasia of the hip among breech-presented Chinese babies is only slightly less common than in corresponding populations in other regions in the world. Since early diagnosis is important, ultrasonography screening in high-risk cases such as those with breech presentation may be useful.
authors.affiliation: Department of Orthopaedics and Traumatology, Tuen Mun Hospital, Tuen Mun, Hong Kong.
authors.forename: C H
authors.initials: CH
authors.lastname: Yau
authors.forename: K Y
authors.initials: KY
authors.lastname: Choi
authors.forename: N S
authors.initials: NS
authors.lastname: Kwong
authors.forename: P C
authors.initials: PC
authors.lastname: Lau
authors.forename: M K
authors.initials: MK
authors.lastname: Yuen
authors.forename: N C
authors.initials: NC
authors.lastname: Kwok
authors.forename: Y Y
authors.initials: YY
authors.lastname: Chow
authors.forename: Sylvia L Y
authors.initials: SL
authors.lastname: Siu
authors.forename: K W
authors.initials: KW
authors.lastname: Li
authors.forename: Diana K
authors.initials: DK
authors.lastname: Lam
mesh_terms: D001946:Breech Presentation; D005260:Female; D005500:Follow-Up Studies; D006618:Hip Dislocation, Congenital / Q000000981:diagnostic imaging / Q000453:epidemiology*; D006723:Hong Kong / Q000453:epidemiology; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D008297:Male; D015997:Neonatal Screening / Q000379:methods*; D011247:Pregnancy; D011446:Prospective Studies; D014463:Ultrasonography