title: Treatment of femoroacetabular impingement with surgical dislocation.
abstract: BACKGROUND
  The authors report the results of femoroacetabular impingement (FAI) treated with a surgical dislocation.
  
  
  METHODS
  From April 2005 to May 2007, 15 FAI hips were treated with a surgical dislocation. The male/female ratio, mean age and mean symptom duration was 12/2, 35.8 years and 2.3 years, respectively. Radiographs and MR arthrograms were taken. The clinical evaluation involved changes in the pre- and postoperative Harris hip score (HHS).
  
  
  RESULTS
  There were 12 hips (80%) with at least one structural abnormality in the radiographs, with 11 (79%) labral tears and 8 (73%) abnormally high angles in the MR arthrograms. We performed 15 osteochondroplasties, 12 labral repairs, 12 acetabuloplasty, and 3 debridements. The mean HHS improved from 76 to 93 points. Three non-unions of the trochanteric osteotomy sites were encountered as complications.
  
  
  CONCLUSIONS
  Radiographs and MR arthrograms are important for making a proper diagnosis of FAI and planning treatment. A surgical dislocation can be used to treat FAI but further technical improvements will be needed for fixation of the greater trochanteric osteotomy sites.
authors.affiliation: Department of Orthopedic Surgery, Guro Hospital, Korea University School of Medicine, Seoul, Korea.
authors.forename: Ho-Hyun
authors.initials: HH
authors.lastname: Yun
authors.forename: Won-Yong
authors.initials: WY
authors.lastname: Shon
authors.forename: Ji-Yeol
authors.initials: JY
authors.lastname: Yun
mesh_terms: D000077:Acetabulum / Q000601:surgery; D000328:Adult; D005260:Female; D057925:Femoracetabular Impingement / Q000000981:diagnostic imaging / Q000601:surgery*; D005270:Femur Head / Q000601:surgery; D006801:Humans; D008023:Ligaments, Articular / Q000601:surgery; D008297:Male; D008875:Middle Aged; D019637:Orthopedic Procedures / Q000379:methods; D010027:Osteotomy; D011859:Radiography; D016896:Treatment Outcome; D055815:Young Adult