title: [Acetabular reconstruction in revision arthroplasty. Retrospective study of 76 cases. Hospital Español de México].
abstract: OBJECTIVE
  To review our experience with the various acetabular reconstruction techniques used during revision arthroplasty based on the defect in each patient.
  
  
  METHODS
  We undertook a retrospective, descriptive, observational study of patients who underwent acetabular reconstruction during revision ar. throplasty, from January 1997 to January 2005. We documented the type of acetabular defect, the type of cup and graft used, the complications, and the pre- and postoperative assessment with the Harris scale. Data were analyzed with the SPSS software and the Wilcoxon test (p < 0.05).
  
  
  RESULTS
  Seventy-six patients underwent surgery. Mean time elapsed between the primary replacement and the revision was 5 years. The acetabular defects found were: 16 type I, 22 type II, 30 type IIIA, and 8 type IIIB. The mean Harris score was 44 preoperatively and 76 postoperatively. The most frequently used technique involved the use of an autograft, a structural allograft with a porous threaded cup or a reinforcement ring. The most common complications included dislocation 5%, infection 3%, graft loss and cup loosening 21%, and loss of the hip center of rotation 15% (p < 0.05).
  
  
  CONCLUSIONS
  Acetabular reconstruction is technically challenging and involves high failure and complication rates, thus providing little improvement in patient activity. It is important to restore the hip center of rotation to improve function. The reconstruction techniques we used are the most common ones and are described in the literature.
authors.affiliation: Hospital Español de México, Granada, DF Mexico.
authors.forename: Cesáreo
authors.initials: C
authors.lastname: Trueba Davalillo
authors.forename: Félix
authors.initials: F
authors.lastname: Gil Orbazo
authors.forename: Fernando
authors.initials: F
authors.lastname: Reyes Marco
authors.forename: Tomás
authors.initials: T
authors.lastname: Minueza Mejía
authors.forename: José Mario
authors.initials: JM
authors.lastname: Navarrete Alvarez
mesh_terms: D000077:Acetabulum / Q000473:pathology / Q000601:surgery*; D000368:Aged; D000369:Aged, 80 and over; D019644:Arthroplasty, Replacement, Hip / Q000295:instrumentation / Q000379:methods / Q000706:statistics & numerical data*; D016025:Bone Transplantation / Q000706:statistics & numerical data; D005260:Female; D006617:Hip Dislocation / Q000453:epidemiology / Q000601:surgery; D006622:Hip Prosthesis; D006801:Humans; D008297:Male; D008800:Mexico; D008875:Middle Aged; D011183:Postoperative Complications / Q000453:epidemiology / Q000601:surgery; D011474:Prosthesis Design; D011475:Prosthesis Failure; D016459:Prosthesis-Related Infections / Q000453:epidemiology / Q000601:surgery; D012086:Reoperation / Q000706:statistics & numerical data; D012189:Retrospective Studies; D012720:Severity of Illness Index; D013530:Surgical Wound Infection / Q000453:epidemiology / Q000601:surgery; D016896:Treatment Outcome