Table 4.
Precision results of double examinations of the femoral and tibial components
| Factor | Femoral component (n = 11) | Tibial component (n = 17) | ||
|---|---|---|---|---|
| Mean (SD) | PI | Mean (SD) | PI | |
| Translation, mm | ||||
| X-axis | 0.013 (0.12) | 0.23 | –0.019 (0.074) | 0.15 |
| Y-axis | –0.012 (0.038) | 0.074 | –0.010 (0.057) | 0.11 |
| Z-axis | –0.002 (0.22) | 0.43 | 0.006 (0.10) | 0.31 |
| Rotation, degree | ||||
| X-axis | 0.046 (0.097) | 0.19 | 0.072 (0.40) | 0.79 |
| Y-axis | –0.036 (0.32) | 0.62 | –0.035 (0.25) | 0.48 |
| Z-axis | –0.060 (0.15) | 0.30 | 0.094 (0.29) | 0.57 |
| MTPM, mm | 0.26 (0.26) | 0.28 (0.20) | ||
PI = precision interval (1.96*SD). In case of non-normality only mean (SD) is presented.