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Identified reasons for revision (n = 89)
| None identified | 60 (67%) |
| Disease progression | 9 (10%) |
| Tibial loosening | 6 (7%) |
| Dislocated bearing | 6 (7%) |
| Infection | 5 (6%) |
| Femoral loosening | 3 (3%) |
| Malalignment | 2 (2%) |
| Periprosthetic fracture | 2 (2%) |
| Cement in joint | 1 (1%) |
