Parameter–mean of 2 visits | Unilateral arthroplasty | Bilateral arthroplasty | ||||||||
---|---|---|---|---|---|---|---|---|---|---|
Biomet ReCap-Magnum group n = 35 | J&J DePuy ASR group n = 34 | Change % | p-value | Biomet ReCap-Magnum group n = 4 | J&J DePuy ASR group n = 3 | |||||
Mean | SD | Mean | SD | Mean | SD | Mean | SD | |||
Cr concentration (μg/l) | 2.04 | 1.31 | 10.45 | 18.16 | 413 | 0.008 | 3.99** | 1.06 | 49.3# | 103.04 |
Co concentration (μg/l) | 1.58 | 0.93 | 9.26 | 13.20 | 487 | 0.001 | 2.98* | 1.46 | 40.5## | 107.68 |
Ni concentration (μg/l) | 0.86 | 0.29 | 0.97 | 0.30 | 13 | 0.130 | 1.01 | 0.31 | 0.92 | 0.20 |
Co/Cr ratio | 0.89 | 0.46 | 1.20 | 0.87 | 35 | 0.070 | 0.73 | 0.19 | 1.27 | 0.41 |