Table 4.
Risk of rerevision in cemented and uncemented first time cup revisions*
| End point in the analysis | Total number of revisions | Number of revisions | RR | 95% CI | p value |
|---|---|---|---|---|---|
| Any reason for rerevision | 18,593 | 2250 | |||
| Cemented revision cup | 13,526 | 1622 | 0.94 | 0.85–1.03 | 0.19 |
| Uncemented revision cup† | 5067 | 628 | 1 | – | – |
| Aseptic loosening | 18,593 | 1446 | |||
| Cemented revision cup | 13,526 | 1082 | 1.14 | 1.00–1.29 | 0.04 |
| Uncemented revision cup† | 5067 | 364 | 1 | – | – |
| Infection | 18,593 | 321 | |||
| Cemented revision cup | 13,526 | 234 | 0.92 | 0.71–1.19 | 0.51 |
| Uncemented revision cup† | 5067 | 87 | 1 | – | – |
| Dislocation | 18,593 | 307 | |||
| Cemented revision cup | 13,526 | 182 | 0.51 | 0.40–0.66 | < 0.001 |
| Uncemented revision cup† | 5067 | 125 | 1 | – | – |
| Other reasons | 18,593 | 176 | |||
| Cemented revision cup | 13,526 | 154 | 0.65 | 0.51–0.83 | 0.005 |
| Uncemented revision cup† | 5067 | 22 | 1 | – | – |
* Cox regression analysis adjusted for age, sex, primary diagnosis, type of fixation in prior hip surgery, components revised, and method of fixation with end point as indicated; †reference; RR = relative risk; CI = confidence interval.