Table 4.
Difference in mean angular measurements between radiographs and 3D CT
Measurement parameter | Modality | Trial 1 | Trial 2 | ||
---|---|---|---|---|---|
Mean | SD | Mean | SD | ||
Angulation (°) | Radiograph | 12.5 | 10.3 | 11.6 | 11.0 |
3D CT | 19.4 | 11.2 | 17.7 | 12.7 | |
Difference | 6.9 | 12.0 | 6.1 | 12.3 | |
p value | < 0.0001 | 0.0002 | |||
GPA (°) | Radiograph | 28.2 | 6.8 | 27.1 | 6.6 |
3D CT | 34.1 | 5.5 | 34.1 | 5.6 | |
Difference | 6.0 | 6.7 | 7.0 | 6.0 | |
p value | < 0.0001 | < 0.0001 |
3D = three-dimensional; GPA = glenopolar angle.