Table 1.
Demographic and surgery-related characteristics of the 659 patients who received the MoM ASR Hip System
| ASR HR | ASR XL THR | |
|---|---|---|
| n = 311 | n = 348 | |
| Female, n (%) | 92 (30) | 153 (44) |
| Age at index surgerya | 55 (18–80) | 63 (24–95) |
| Years from index surgery to follow-upa | 6.4 (2.8–10.1) | 5.8 (2.4–8.8) |
| Diagnosis, n (%) | ||
| Idiopathic OA | 276 (89) | 302 (87) |
| Secondary OA | 14 (4.5) | 21 (6.0) |
| Unspecified OA | 20 (6.4) | 24 (6.9) |
| Rheumatoid arthritis | 1 (0.3) | 1 (0.3) |
| Femoral head size (IQR), mmb | 51 (49–55) | 49 (46–51) |
| Cup inclination angle (IQR), degreesb | 45 (41–49) | 43 (39–48) |
| MARS MRI available, n (%) | 116 (37) | 131 (38) |
a
Mean (range)
b
Median (interquartile range).