Clinical Orthopaedics and Related Research®

, Volume 468, Issue 5, pp 1258–1263 | Cite as

The 5-year Results of an Oxidized Zirconium Femoral Component for TKA

  • Massimo Innocenti
  • Roberto Civinini
  • Christian Carulli
  • Fabrizio Matassi
  • Marco Villano
Clinical Research


Osteolysis secondary to polyethylene wear is one of the major factors limiting long-term performance of TKA. Oxidized zirconium is a new material that combines the strength of a metal with the wear properties of a ceramic. It remains unknown whether implants with a zirconium femoral component can be used safely in TKA. To answer that question, we reviewed, at a minimum of 5 years, the clinical outcome and survivorship of a ceramic-surfaced oxidized zirconium femoral component implanted during 98 primary TKAs between April 2001 and December 2003. Survivorship was 98.7% at 7 years postoperatively. No revision was necessary and only one component failed because of aseptic loosening. Mean Knee Society score improved from 36 to 89. No adverse events were observed clinically or radiologically. These results justify pursuing the use of oxidized zirconium as an alternative bearing surface for a femoral component in TKA.

Level of Evidence: Level IV, therapeutic study. See Guidelines for Authors for a complete description of levels of evidence.


Femoral Component Aseptic Loosening Tibial Component Anterior Knee Pain Knee Society Score 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.



We thank Jacques Bruhwyler from Squarepoint-Pointcarre for help in preparing the manuscript.


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Copyright information

© The Association of Bone and Joint Surgeons® 2009

Authors and Affiliations

  • Massimo Innocenti
    • 1
  • Roberto Civinini
    • 1
  • Christian Carulli
    • 1
  • Fabrizio Matassi
    • 1
  • Marco Villano
    • 1
  1. 1.Second Orthopaedic Clinic, Department of Orthopaedics and Traumatology, Plastic Surgery and RehabilitationUniversity of FlorenceFlorenceItaly

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