Table 1.
Time to revision for dislocation by bearing surface*
| Bearing surface | Time to revision for dislocation | Total number | |
|---|---|---|---|
| < 1 year | ≥ 1 year | ||
| Number (%) | Number (%) | ||
| Ceramic-on-ceramic | 26 (62) | 16 (38) | 42 |
| Ceramic-on-polyethylene | 58 (37) | 98 (63) | 156 |
| Metal-on-metal | 25 (52) | 23 (48) | 48 |
| Metal-on-polyethylene | 288 (46) | 333 (54) | 621 |
| Total | 397 (46) | 470 (54) | 867 |
* The ceramic-on-ceramic couple had the highest proportion of revisions during the first postoperative year and the smallest proportion of revisions after the first postoperative year.