Table 4.
Temporal stratification and percentage breakdown of all knee revisions.
| Etiology | 2009-2013 TKA, N (%) | 2014-2019 TKA, N (%) | Overall TKA, N (%) | P value |
|---|---|---|---|---|
| Arthrofibrosis | 68 (5.1) | 57 (3.4) | 125 (4.2) | .023 |
| Extensor mechanism failure | 19 (1.4) | 33 (2.0) | 52 (1.7) | .23 |
| Fracture | 20 (1.5) | 29 (1.7) | 49 (1.6) | .58 |
| Infection | 524 (38.9) | 476 (28.6) | 1000 (33.2) | .001 |
| Instability | 169 (12.6) | 313 (18.8) | 482 (16.0) | .001 |
| Aseptic loosening | 447 (33.2) | 608 (36.5) | 1055 (35.1) | .059 |
| Mechanical failure | 9 (0.7) | 20 (1.2) | 29 (1.0) | .14 |
| Miscellaneous | 7 (0.5) | 10 (0.6) | 17 (0.6) | .77 |
| Unicompartmental arthroplasty converted to full TKA | 31 (2.3) | 50 (3.0) | 81 (2.7) | .24 |
| Wear | 43 (3.2) | 51 (3.1) | 94 (3.1) | .84 |
| Wound dehiscence | 8 (0.6) | 17 (1.0) | 25 (0.8) | .20 |
| Total | 1345 | 1664 | 3009 |