title: [Acetabular reconstuction for loosening in uncemented hip revision surgery. A series of 18 cases].
abstract: OBJECTIVE
  To describe the clinical and X-ray outcomes of the use of structured bone autograft and uncemented extended-configuration acetabular cup in hip revision surgery.
  
  
  METHODS
  Eighteen patients, 12 females (66.66%) and 6 males (33.33%), with a diagnosis of uncemented, aseptic acetabular loosening were assessed during the preoperative period, radiologically with the Paprowsky classification and clini cally with the Harris scale. They were considered for revision surgery and exchange of the acetabular component with a structured autograft and an extended-configuration, uncemented acetabular cup. They were reviewed during the period from January 2000 to June 2005.
  
  
  RESULTS
  Mean followup was 48 months; according to the Paprowsky scale the acetabular deficiency was: grade I in 11 patients (61.11%), grade II in 5 patients (27.77%), and grade III in 2 patients (11.11%). The following uncemented cups were used: the Healy Flanged in 4 patients (22.22%), and the extended diameter cup in 14 patients (77.77%). The mean time to the assessment of radiological grafting was 14 weeks; the time to assisted weight bearing with a walker was 8 weeks, the time to full weight bearing with a walker was 10 weeks.
  
  
  CONCLUSIONS
  The use of a structured autograft assures the integration and reinforcement of the acetabular bottom with a considerable length of time to healing of 8 to 12 weeks. The use of revision extended-configuration implants and their three-point fixation assures primary and secondary stability and helps the patient resume his activities.
authors.affiliation: Hospital General de México.
authors.forename: José Dolores
authors.initials: JD
authors.lastname: García Juárez
authors.forename: Pedro Antonio
authors.initials: PA
authors.lastname: Bravo Bernabé
authors.forename: Antonio
authors.initials: A
authors.lastname: García Hernández
authors.forename: Oscar E
authors.initials: OE
authors.lastname: Dávila Sheldon
authors.forename: Giovanni
authors.initials: G
authors.lastname: Correa Dominguez
mesh_terms: D000077:Acetabulum / Q000000981:diagnostic imaging / Q000601:surgery*; D000328:Adult; D019644:Arthroplasty, Replacement, Hip / Q000379:methods* / Q000706:statistics & numerical data; D016025:Bone Transplantation; D005260:Female; D005500:Follow-Up Studies; D006085:Graft Survival; D006622:Hip Prosthesis; D006801:Humans; D008297:Male; D008875:Middle Aged; D016348:Osseointegration; D011474:Prosthesis Design; D011475:Prosthesis Failure; D011859:Radiography; D020127:Recovery of Function; D012086:Reoperation; D012189:Retrospective Studies; D014182:Transplantation, Autologous