title: Radiographic change is common in new presenters in primary care with hip pain. PCR Hip Study Group.
abstract: OBJECTIVE
  To determine the prevalence of radiographic osteoarthritis in subjects with hip pain newly presenting to primary care.
  
  
  METHODS
  The study was cross-sectional in design, set in 35 general practices across the UK. It included 195 men and women aged 40 yr and over (median 63 yr) presenting with a new episode of hip pain. Hip radiographs were scored for minimum joint space (MJS) and overall-Croft's modification of the Kellgren and Lawrence (Croft)-grade of osteoarthritis.
  
  
  RESULTS
  In all, definite evidence of radiographic change in the painful joint was common: Croft grade > or =2 in 44%, > or =3 in 34%. MJS of 2.5 mm or less was seen in 30% of whom half were below 1.5 mm. There were no significant gender differences in radiographic severity.
  
  
  CONCLUSIONS
  Radiographic change is common in patients newly presenting with hip pain and many already have advanced disease.
authors.affiliation: ARC Epidemiology Unit, University of Manchester, Manchester M13 9PT, UK.
authors.forename: F
authors.initials: F
authors.lastname: Birrell
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 J
authors.initials: GJ
authors.lastname: Macfarlane
authors.forename: A
authors.initials: A
authors.lastname: Silman
mesh_terms: D000328:Adult; D000368:Aged; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D015337:Multicenter Studies as Topic; D015207:Osteoarthritis, Hip / Q000000981:diagnostic imaging* / Q000453:epidemiology / Q000503:physiopathology; D010146:Pain / Q000209:etiology; D011320:Primary Health Care; D011446:Prospective Studies; D011859:Radiography