Table 4.
Revision rates, metal ion concentrations, and followup times for the ASR™ system reported in the literature
| Study | Revision rate (%) | Whole blood metal ion levels (μg/L)* | Followup (months)* | |
|---|---|---|---|---|
| Cobalt | Chromium | |||
| THA | ||||
| National Joint Registry for England and Wales [25] | 13 | 60 | ||
| Steele et al. [34] | 15 | 19 (2–41) | ||
| Bernthal et al. [1] | 17.1 | (24–60) | ||
| Langton et al. [16] | 6.0 | 3.26 (1.1–32) | 3.71 (2.4–22) | 41 (10–57) |
| Lavigne et al. [19] | 0 | 1.78 (0.32–7.59) | 1.78 (0.24–6.20) | 24 |
| Current study | 13 | 14 (0–150) | 5 (0–87) | 36 (12–61) |
| Resurfacing | ||||
| National Joint Registry for England and Wales [25] | 12 | 60 | ||
| Jameson et al. [13] | 5.6 | 43 (30–57) | ||
| Langton et al. [16] | 3.2 | 2.74 (0.4–271) | 4.16 (1.5–69.8) | 35 (8–57) |
| Langton et al. [17] | 1.3 | 1.89 (0.4–228.0) | 3.61 (0.6–115.0) | 26 (13–44) |
| Current study | 12 | 12 (0–126) | 7 (0–60) | 54 (12–74) |
* Values are expressed as mean, with range in parentheses.