Medium-term outcome of titanium nitride, mobile bearing total knee replacement.

This retrospective study examined the medium term outcome of 305 Titanium Nitride (TiN) Mobile bearing total knee. At ten years after the start of the study, there was a significant improvement (p < 0.0001) in the post-operative knee scores. The ten year survival with revision for any reason as the end point was 95.1% (95% CI 92.4 to 97.8). The ten year survival rate with revision for aseptic loosening as the end point was 99.1% (95% CI 97.8 to 100%). A total of 15 knees (4.9%, overall) required revision. No cases were revised due to sepsis. Based on these results, the surface Titanium Nitride ceramic, mobile-bearing total knee replacement has proved to be a reliable implant at 10 years when used in primary knee replacement.