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Table 4 Bearing wear and taper corrosion volumes measured on retrieved MoM bearings

From: Mid-term progressive loosening of hydroxyapatite-coated femoral stems paired with a metal-on-metal bearing

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)