- Oxinium or otherwise “oxidised zirconium” was suggested as a good bearing surface by Bourne in his article in CORR 2005.
- These oxinium surfaces are derived from a zirconium base that is heated and then infused with oxygen, transforming the outermost layer into a ceramic shell
- This surface possibly combines the fracture resistance of metal, with wear resistance of ceramics
- The major advantage of oxinium is its apparent capacity for reduced wear when coupled as a femoral head component to a polyethylene cup
- Unfortunately not enough long term outcome studies are available for this bearing surface
- Infact, there have been case reports, by Kop et al.. in J Arthroplasty, 2007 and McCalden JBJS(B) 2011 where there is early damage of these ‘oxinium’ components, especially the zirconium bases on which they are built upon.
1. Damage of an Oxinium femoral head and polyethylene liner following ‘routine’ total hip replacement.
J Bone Joint Surg Br. 2011 Mar;93(3):409-13.
2. Damage of oxinium femoral heads subsequent to hip arthroplasty dislocation three retrieval case studies.
Kop AM, Whitewood C, Johnston DJ. J Arthroplasty. 2007 Aug;22(5):775-9
4. Arthroplasty options for the young patient: Oxinium on cross linked polyethylene