Table 2.
Pooled estimates of survival for each available timepoint
| Number of series | Total number of arthroplasties at the start of the series | Pooled survival estimate (95% CI) | |
|---|---|---|---|
| Total knee replacement | |||
| 15 years | 15 | 4137 | 96·3% (95·7–96·9) |
| 16·8 years | 2 | 228 | 96·3% (93·5–99·0) |
| 18 years | 2 | 572 | 93·8% (81·0–96·0) |
| 19 years | 2 | 356 | 96·1% (92·8–99·4) |
| 20 years | 5 | 763 | 94·8% (92·5–97·1) |
| 20·8 years | 1 | 160 | 86·9% (80·4–91·5) |
| 22 years | 1 | 163 | 82·1% (76·2–88·0) |
| 23 years | 1 | 489 | 89·0% (82·0–93·0) |
| Unicondylar knee replacement | |||
| 15 years | 4 | 387 | 85·5% (82·2–88·7) |
| 16 years | 1 | 113 | 81·3% (67·7–94·8) |
| 20 years | 4 | 437 | 81·9% (77·8–85·9) |
| 22 years | 1 | 140 | 84·0% (75·0–93·0) |
| 25 years | 1 | 136 | 72·0% (58·0–95·0) |