Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Kaplan-Meier life-table survival of 48 total ankle replacements with the decision to revise as the endpoint
| Years since operation | Number at start | Number revised | Lost | Survival rate (%) | 95% Confidence interval |
|---|---|---|---|---|---|
| 0–1 | 48 | 2 | 0 | 96 | 84.3 to 98.9 |
| 1–2 | 46 | 1 | 0 | 94 | 81.9 to 97.9 |
| 3–4 | 45 | 1 | 0 | 92 | 79.3 to 96.8 |
| 4–5 | 44 | 1 | 0 | 90 | 76.8 to 95.5 |
| 5–6 | 43 | 1 | 8 | 87 | 73.8 to 94.1 |
| 6–7 | 34 | 1 | 15 | 84 | 68.9 to 92.2 |
| 7–8 | 18 | 0 | 12 | 84 | 68.9 to 92.2 |
| 8–9* | 6 | 1 | 3 | 65 | 24.3 to 88.0 |
* Two patients had a followup of 9 to 9.2 years and no failures.
