TABLE IV.
Preoperative and Postoperative Radiographic Parameters Associated with PAO
| Preop. (N = 391) | Postop. (N = 320) | Change (Mean and Std. Dev.)* | P Value | |
| L-CEA | ||||
| Mean (deg) | 8.1 | 29.6 | 20.9 ± 12.4 | <0.001 |
| <5° | 35% | |||
| ≥5° to <15° | 30% | |||
| ≥15° | 35% | |||
| A-CEA | ||||
| Mean (deg) | 6.0 | 30.2 | 23.4 ± 17.0 | <0.001 |
| <5° | 41% | |||
| ≥5° to <15° | 32% | |||
| ≥15° | 28% | |||
| Acetabular inclination | ||||
| Mean (deg) | 22.5 | 5.6 | −16.9 ± 10.7 | <0.001 |
| <10° | 5% | |||
| ≥10° to <20° | 36% | |||
| ≥20° | 59% | |||
| Tönnis classification | ||||
| Grade 0-1 | 91% | 93% | ||
| Grade 2 | 8% | 6% | ||
| Grade 3-4 | 2% | 1% | ||
| Joint congruity | ||||
| Excellent | 34% | 55% | ||
| Good | 54% | 38% | ||
| Fair | 11% | 7% | ||
| Poor | 1% | 0% |
*
The change is based on patients with preoperative and postoperative measures.