Table 4 Bearing wear and taper corrosion volumes measured on retrieved MoM bearings
MoM patient | Head wear (mm3) | Liner wear (mm3) | Taper corrosion score | Head corrosion volume (mm3) | Neck corrosion volume (mm3) | Total metal release (mm3) |
|---|---|---|---|---|---|---|
Pt 1 | 1.76 | – | – | 0.46 | 0.20 | 2.42 |
Pt 2 | 1.14 | – | 2 | 0.15 | 0.33 | 1.62 |
Pt 3 | 0.78 | 0.40 | 1 | 0.71 | 0.50 | 2.39 |
Pt 4 | 8.77 | 0.50 | 2 | 1.13 | 0.31 | 10.71 |
Pt 5 | 0.84 | 0.15 | 3 | 7.10 | 0.25 | 8.34 |
Pt 6 | 1.63 | 0.62 | 3 | 1.23 | 0.15 | 3.63 |
Pt 7 | 1.35 | 0.07 | 1 | 0.21 | 0.17 | 1.80 |
Pt 8 | 2.01 | 0.82 | – | 0.87 | 0.30 | 3.99 |
Pt 9 | 9.85 | 0.32 | 2 | 0.71 | 0.72 | 11.60 |
Pt 10 | 1.16 | 0.18 | 3 | 5.40 | 0.2 | 6.93 |
Mean (SD) | 2.93 (3.40) | 0.38 (0.26) | 2.1 (0.8) | 1.80 (2.41) | 0.31 (0.18) | 5.34 (3.77) |