Table 2.
Clinical precision of model-based RSA in 24 trial patients
| RSA method | Translation (mm) | Translation (mm) | Translation (mm) | Rotation (degrees) | Rotation (degrees) | Rotation (degrees) |
|---|---|---|---|---|---|---|
| x axis | y axis | z axis | x axis | y axis | z axis | |
| Model-based RSA | ||||||
| Mean difference | −0.01 | 0.01 | −0.03 | 0.01 | 0.01 | −0.01 |
| 95% CI | −0.04–0.02 | −0.02–0.04 | −0.07–0.013 | −0.08–0.10 | −0.16–0.18 | −0.09–0.08 |
| Clinical precision | 0.13 | 0.14 | 0.47 | 0.41 | 0.79 | 0.39 |
Mean difference = paired difference between the measurements of double examinations; 95% CI = for the mean difference; clinical precision = t × SD.