Table 5.
Mean difference (degrees) between measurements
| Angle | Interobserver | SD | Intraobserver 1 | SD | Intraobserver 2 | SD | Mean error 1 | SD | Mean error 2 | SD |
|---|---|---|---|---|---|---|---|---|---|---|
| Inclination | 1.90 | 0.90 | 2.4 | 1.53 | 0.83 | 0.80 | 3.09 | 1.59 | 1.94 | 1.54 |
| Acetabular component version on CT | 2.23 | 2.46 | 0.74 | 0.79 | 2.81 | 4.79 | 3.46 | 2.93 | 4.15 | 3.11 |
| Acetabular component version on cross-table lateral radiographs | 1.28 | 1.70 | 1.32 | 0.84 | 1.27 | 2.83 | 4.34 | 5.05 | 4.68 | 5.27 |
| Acetabular component version on modified cross-table lateral radiographs | 1.23 | 1.45 | 0.59 | 0.43 | 1.6 | 3.05 | 4.41 | 4.46 | 4.94 | 4.68 |