title: Prevalence of developmental dysplasia of the hip in children with clubfoot.
abstract: OBJECTIVE
  The relationship between congenital talipes equinovarus (CTEV) and developmental dysplasia of the hip (DDH) remains uncertain. The role of routine hip screening in children with CTEV is debated. A recent study has found a high incidence of DDH in patients with CTEV. The aim of our study was to determine the true prevalence of radiographic hip dysplasia and identify the need for routine hip screening in patients treated for CTEV.
  
  
  METHODS
  From a single centre database of 165 children consisting of 260 CTEV, a prospective radiological prevalence study of 101 children was performed over a period of 3 months. A single anterior-posterior pelvic radiograph was performed at a minimum age of 5 months. The DDH was determined by a single senior investigator based on the age-adjusted acetabular index (AI) as described by Tonnis.
  
  
  RESULTS
  There were no dislocations or subluxations. According to the age-adjusted AI, 16 children had 'light' dysplasia and one child had 'severe' dysplasia. The child with severe dysplasia was known to have DDH and had already undergone treatment. The 16 children with light dysplasia did not require any form of treatment.
  
  
  CONCLUSIONS
  Out of one hundred and one children with CTEV, only one had DDH requiring treatment. This is consistent with the majority of the literature supporting the premise that there is no true association between CTEV and DDH. We, therefore, feel that routine hip screening for children with CTEV is not supported by current evidence and cannot be recommended.
authors.affiliation: Centre for Orthopaedics, The Royal London and Barts and The London Children's Hospital, Barts Health NHS Trust, Whitechapel Road, Whitechapel, London, E1 1BB UK.
authors.forename: Daud Ts
authors.initials: DTs
authors.lastname: Chou
authors.affiliation: Centre for Orthopaedics, The Royal London and Barts and The London Children's Hospital, Barts Health NHS Trust, Whitechapel Road, Whitechapel, London, E1 1BB UK.
authors.forename: Manoj
authors.initials: M
authors.lastname: Ramachandran
keywords: Club foot; Congenital talipes equinovarus; Developmental dysplasia of the hip; Hip dysplasia; Hip screening