Table 1.
Changes in ΔRI and ΔRA in accordance with pelvic tilt (n = 6).
| Sagittal tilt | Posterior tilt 20° | Posterior tilt 15° | Posterior tilt 10° | Posterior tilt 5° | Neutral | Anterior tilt 5° | Anterior tilt 10° | Anterior tilt 15° | Anterior tilt 20° | P value |
|---|---|---|---|---|---|---|---|---|---|---|
| ΔRI (degrees) | −0.95 ± 0.4 | −2.4 ± 0.2 | −0.4 ± 0.7 | −1.4 ± 0.1 | 0.5 ± 0.7 | 1.4 ± 0.2 | 3.7 ± 0.8 | 5.0 ± 0.6 | 7.9 ± 0.7 | ＜.001 |
| ΔRA (degrees) | −15.2 ± 0.4 | −11.6 ± 0.2 | −7.2 ± 0.6 | −3.7 ± 0.2 | 1.0 ± 0.7 | 3.2 ± 0.3 | 9.0 ± 0.6 | 10.3 ± 0.3 | 13.9 ± 0.4 | ＜.001 |
| Coronal tilt | Right tilt 20° | Right tilt 15° | Right tilt 10° | Right tilt 5° | Neutral | Left tilt 5° | Left tilt 10° | Left tilt 15° | Left tilt 20° | |
| ΔRI (degrees) | −19.2 ± 0.3 | −14.5 ± 0.3 | −9.9 ± 0.5 | −4.6 ± 0.4 | 0.5 ± 0.7 | 5.3 ± 0.2 | 10.5 ± 0.2 | 15.3 ± 0.2 | 20.0 ± 0.4 | ＜.001 |
| ΔRA (degrees) | 0.9 ± 0.3 | −0.3 ± 0.2 | 1.4 ± 0.4 | 0.1 ± 0.1 | 1 ± 0.7 | −0.4 ± 0.2 | 1.4 ± 0.5 | −0.3 ± 0.2 | −0.1 ± 0.4 | .214 |
| Axial tilt | Right rotation 20° | Right rotation 15° | Right rotation 10° | Right rotation 5° | Neutral | Left rotation 5° | Left rotation 10° | Left rotation 15° | Left rotation 20° | |
| ΔRI (degrees) | 4.3 ± 0.5 | 2.8 ± 0.2 | 3.4 ± 0.2 | 1.2 ± 0.2 | 0.5 ± 0.7 | −1.3 ± 0.3 | −2.0 ± 0.4 | −5.4 ± 0.2 | −6.8 ± 0.3 | ＜.001 |
| ΔRA (degrees) | −13.4 ± 0.3 | −10.2 ± 0.3 | −6.6 ± 0.5 | −3.1 ± 0.3 | 1 ± 0.7 | 3.3 ± 0.3 | 6.9 ± 0.3 | 9.2 ± 0.3 | 11.4 ± 0.3 | ＜.001 |
RA, radiographic anteversion; RI, radiographic inclination.