Table 1.
Cause for revision | Time from index to revision | |
---|---|---|
Less than 2 years (%) | Greater than 2 years (%) | |
Aseptic loosening | 10 (2.9) | 42 (12.0) |
Wear | 3 (0.9) | 40 (11.5) |
Instability | 15 (4.3) | 12 (3.4) |
Infection | 40 (11.5) | 74 (21.2) |
Fracture | 6 (1.7) | 23 (6.6) |
Patella | 10 (2.9) | 5 (1.4) |
Conversion of unicompartmental replacement | 4 (1.1) | 25 (7.1) |
Malalignment | 13 (3.7) | 10 (2.9) |
Component failure | 1 (0.3) | 2 (0.6) |
Extensor mechanism failure | 2 (0.6) | 3 (0.9) |
Stiffness | 8 (2.3) | 1 (0.2) |
Total | 112 | 237 |