title: Syndrome of symptomatic adult acetabular dysplasia (SAAD syndrome).
abstract: OBJECTIVE
  To determine the prevalence of acetabular dysplasia in subjects presenting with hip pain to primary care and its relationship with radiographic osteoarthritis (OA) of the hip.
  
  
  METHODS
  Cross sectional analysis of a prospective cohort.
  
  
  METHODS
  35 general practices across the UK.
  
  
  METHODS
  195 patients (63 male, 132 female) aged 40 years and over presenting with a new episode of hip pain
  
  
  RESULTS
  The prevalence of acetabular dysplasia in this study of new presenters with hip pain was high (32%). There was no significant relationship between acetabular dysplasia and radiographic OA overall.
  
  
  CONCLUSIONS
  The high prevalence of acetabular dysplasia across all grades of OA severity suggests that dysplasia itself may be an important cause of hip pain ("symptomatic adult acetabular dysplasia").
authors.affiliation: ARC Epidemiology Unit, University of Manchester, UK.
authors.forename: F
authors.initials: F
authors.lastname: Birrell
authors.forename: A
authors.initials: A
authors.lastname: Silman
authors.forename: P
authors.initials: P
authors.lastname: Croft
authors.forename: C
authors.initials: C
authors.lastname: Cooper
authors.forename: G
authors.initials: G
authors.lastname: Hosie
authors.forename: G
authors.initials: G
authors.lastname: Macfarlane
mesh_terms: D000328:Adult; D000368:Aged; D018771:Arthralgia / Q000209:etiology*; D003430:Cross-Sectional Studies; D005260:Female; D006618:Hip Dislocation, Congenital / Q000150:complications* / Q000453:epidemiology; D006621:Hip Joint; D006801:Humans; D008297:Male; D008875:Middle Aged; D015207:Osteoarthritis, Hip / Q000000981:diagnostic imaging / Q000209:etiology*; D015995:Prevalence; D011859:Radiography; D012720:Severity of Illness Index; D006113:United Kingdom / Q000453:epidemiology