Table 1 Metal ion concentrations in cemented and uncemented stems, together with statistical comparison
Metal ions | Type of stem fixation | Parameters of ion concentration in μg/kg | P and Z value | |||||
|---|---|---|---|---|---|---|---|---|
min | max | x | Me | SD | v (%) | |||
Titanium | Cemented | 118.6 | 1196 | 516.7 | 423.4 | 303.2 | 58.7 | z = 5.937; p < 0.001 |
Uncemented | 768.5 | 999999 | 55308.6 | 12268.6 | 197431.8 | 356.9 | ||
Aluminium | Cemented | 103.5 | 1234.5 | 278.8 | 154.7 | 270.7 | 97.1 | z = 5.879; p < 0.001 |
Uncemented | 567.8 | 7977.2 | 3779.8 | 3464.7 | 2374.0 | 62.8 | ||
Nickel | Cemented | 38.8 | 204230.4 | 8580.5 | 365.5 | 40765.5 | 475.1 | z = 1.572; p > 0.05 |
Uncemented | 54.4 | 1353.7 | 568.3 | 468.2 | 438.5 | 77.2 | ||
Chrome | Cemented | 88.6 | 1494.6 | 532.3 | 347.5 | 451.6 | 84.8 | z = 0.854; p > 0.05 |
Uncemented | 113.4 | 1345.8 | 553.7 | 455.7 | 347.8 | 62.8 | ||
Cobalt | Cemented | 2.5 | 327.6 | 85.9 | 23.3 | 108.6 | 126.5 | z = 1.717; p > 0.05 |
Uncemented | 11.2 | 367.3 | 124.4 | 44.8 | 126.3 | 101.5 | ||
Molybdenum | Cemented | 32.9 | 47855.3 | 2165.2 | 198.8 | 9522.7 | 439.8 | z = 1.455; p > 0.05 |
Uncemented | 12.9 | 999999 | 40787.9 | 444.7 | 199841.3 | 489.9 | ||