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Related Experiment Video

Updated: Mar 28, 2026

Biotribological Testing and Analysis of Articular Cartilage Sliding against Metal for Implants
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Trabecular Metal Use in Paprosky Type 2 and 3 Acetabular Defects: 5-Year Follow-Up.

Rhys G E Clement1, Andrew G Ray1, Deborah J MacDonald1

  • 1Department of Trauma and Orthopaedics, Royal Infirmary of Edinburgh, Edinburgh, United Kingdom.

The Journal of Arthroplasty
|December 30, 2015
PubMed
Summary

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The bone & joint journal·2025

Trabecular metal (TM) revision shells offer a stable solution for complex acetabular reconstruction in revision total hip arthroplasty. This study shows a 92% implant survival rate at 5 years, indicating satisfactory outcomes.

Area of Science:

  • Orthopedic Surgery
  • Biomaterials Engineering
  • Arthroplasty Research

Background:

  • Revision total hip arthroplasty presents challenges in reconstructing a stable acetabulum, especially with significant osteolytic lesions.
  • Trabecular metal (TM) implants are increasingly used, necessitating continued evaluation of their long-term performance.

Purpose of the Study:

  • To evaluate the clinical and radiological outcomes of using TM revision acetabular shells in patients with Paprosky type 2 or 3 acetabular defects.
  • To assess the implant survival rate and functional scores following revision hip arthroplasty with TM shells.

Main Methods:

  • A consecutive series of 52 patients (55 hips) underwent revision total hip arthroplasty using TM revision acetabular shells.
  • Clinical and radiological outcomes were reviewed for patients with Paprosky type 2 or 3 acetabular defects.
Keywords:
acetabulum/radiography/surgeryarthroplasty, hip/instrumentation/methodsprosthesis failurereconstructive surgical procedures/methodsreoperationtantalum

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Main Results:

  • Four implant failures (2 infections, 2 dislocations) were recorded.
  • Five-year implant survival rate was 92% (95% CI: 80.2%-96.9%), with no radiological loosening.
  • Mean Oxford hip score was 34 at a mean follow-up of 63 months.

Conclusions:

  • Trabecular metal revision shells provide satisfactory results for complex acetabular reconstructions.
  • The use of TM shells in revision hip arthroplasty demonstrates a favorable survival rate and functional outcome.