Table 1.
Patient demographic and surgical characteristics, 2003-2008.
| Sample characteristics | ||
|---|---|---|
| Time to revision, y, median (IQR) | 7.5 | (5.3-9.9) |
| Follow-up time, y, median (IQR) | 10.3 | (6.0-12.3) |
| Age, years, μ (sd) | 55.9 | (8.1) |
| Body mass index, kg/m2, μ (sd) | 29.3 | (5.7) |
| Diagnosis, n (%) | ||
| Osteoarthritis (OA) | 505 | 93% |
| Secondary OA | 29 | 5% |
| Other | 10 | 2% |
| Stem Offset (mm), n (%) | ||
| 0 to +4 | 35 | 6% |
| +6 | 74 | 14% |
| +8 | 198 | 36% |
| +12 | 237 | 44% |
| Head size (mm), n (%) | ||
| 28 | 89 | 16% |
| 36 | 445 | 82% |
| 40 | 10 | 2% |
| Head length (mm), n (%) | ||
| 0 | 306 | 56% |
| 3 | 166 | 31% |
| 6 | 62 | 11% |
| 9 | 10 | 2% |
| Cup abduction angle, n (%) | ||
| ≤40° | 188 | 35% |
| 41°-50° | 313 | 58% |
| >50° | 43 | 8% |