Table 2.
Causes of endoprosthesis failure
| Type or site of implant (number of cases) | Type 1 (soft tissue failure) | Type 2 (aseptic loosening) | Type 3 (structural failure) | Type 4 (infection) | Type 5 (tumor recurrence) | All types (risk) |
|---|---|---|---|---|---|---|
| Primary implants (175) | 18 (10.3%) | 9 (5.1%) | – | 20 (11.4%) | 11 (6.3%) | 58 (33%) |
| Revisions (72) | 3 (4.2%) | 5 (6.9%) | – | 3 (4.1%) | 3 (4.1%) | 14 (19.4%) |
| Distal femur (187) | 13 (7%) | 10 (5.3%) | – | 16 (8.5%) | 11 (5.9%) | 50 (26.7%) |
| Proximal tibia (60) | 8 (13.3%) | 4 (6.6%) | – | 7 (11.6%) | 3 (5%) | 22 (36.7%) |
| Overall (247) | 21 (8.5%) | 14 (5.7%) | – | 23 (9.3%) | 14 (5.7%) | 72 (29.1%) |