title: Trabecular Metal Use in Paprosky Type 2 and 3 Acetabular Defects: 5-Year Follow-Up.
abstract: BACKGROUND
  The reconstructive challenge of achieving a stable acetabulum in revision total hip arthroplasties in the presence of major osteolytic lesions has led to debate about the most appropriate surgical strategy to minimize implant-related failures. Trabecular metal (TM) implants have become popular but ongoing surveillance of their performance is required.
  
  
  METHODS
  We reviewed the clinical and radiological outcome of a consecutive series of 52 patients (55 hips) who had undergone revision total hip arthroplasty for Paprosky type 2 or 3 acetabular defects with TM revision acetabular shells between 2002 and 2008.
  
  
  RESULTS
  Four implant failures occurred (2 infections and 2 dislocations). Eleven patients from this cohort died (representing 12 hips) before the 5-year follow-up period giving us a follow-up of 78.2%. Implant survival at 5 years was 92% (95% confidence interval: 80.2%-96.9%). There were no cases of radiological loosening. The mean Oxford hip score was 34 (range, 5-48) at a mean follow-up of 63 months (range, 34-105 months).
  
  
  CONCLUSIONS
  We conclude that the use of TM revision shells for complex acetabular reconstruction yields satisfactory results.
authors.affiliation: Department of Trauma and Orthopaedics, Royal Infirmary of Edinburgh, Edinburgh, United Kingdom.
authors.forename: Rhys G E
authors.initials: RG
authors.lastname: Clement
authors.affiliation: Department of Trauma and Orthopaedics, Royal Infirmary of Edinburgh, Edinburgh, United Kingdom.
authors.forename: Andrew G
authors.initials: AG
authors.lastname: Ray
authors.affiliation: Department of Trauma and Orthopaedics, Royal Infirmary of Edinburgh, Edinburgh, United Kingdom.
authors.forename: Deborah J
authors.initials: DJ
authors.lastname: MacDonald
authors.affiliation: Department of Trauma and Orthopaedics, Royal Infirmary of Edinburgh, Edinburgh, United Kingdom.
authors.forename: Frazer A
authors.initials: FA
authors.lastname: Wade
authors.affiliation: Department of Trauma and Orthopaedics, Royal Infirmary of Edinburgh, Edinburgh, United Kingdom.
authors.forename: Richard
authors.initials: R
authors.lastname: Burnett
authors.affiliation: Department of Trauma and Orthopaedics, Royal Infirmary of Edinburgh, Edinburgh, United Kingdom.
authors.forename: Matthew
authors.initials: M
authors.lastname: Moran
mesh_terms: D000077:Acetabulum / Q000473:pathology / Q000601:surgery*; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D019644:Arthroplasty, Replacement, Hip / Q000379:methods*; D001672:Biocompatible Materials; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008670:Metals; D008875:Middle Aged; D010014:Osteolysis / Q000601:surgery*; D012086:Reoperation
chemical_list: D001672:Biocompatible Materials; D008670:Metals
keywords: acetabulum/radiography/surgery; arthroplasty, hip/instrumentation/methods; prosthesis failure; reconstructive surgical procedures/methods; reoperation; tantalum