Table 2.
Surgical parameters and postoperative follow-up indexes between 3DP group and CS group
| Parameter | 3DP group (n = 20) | CS group (n = 18) | P value |
|---|---|---|---|
| operation time, h | 126.6 ± 17.6 | 156.0 ± 18.6 | 0.003 |
| blood loss, mL | 115.0 ± 16.9 | 135.7 ± 26.5 | 0.050 |
| number of radiation exposures, times | 3.3 ± 0.8 | 8.6 ± 1.3 | < 0.001 |
| sharp angle(°) | 41.8 ± 2.3 | 42.6 ± 3.1 | 0.918 |
| center-edge angle(°) | 35.6 ± 4.2 | 37.1 ± 2.8 | 0.846 |
| acetabular roof angle(°) | 6.9 ± 1.8 | 9.8 ± 2.6 | 0.643 |
| acetabular head index(°) | 86.6 ± 4.1 | 84.3 ± 2.8 | 0.891 |
| crossover sign | |||
| positive | 5 | 4 | 0.841 |
| negative | 15 | 14 | |
| ischial spine sign | |||
| positive | 6 | 7 | 0.564 |
| negative | 14 | 11 | |
| McKay criteria | |||
| excellent | 10 | 12 | 0.698 |
| good | 6 | 4 | |
| general | 4 | 2 | |
| poor | 0 | 0 | |
| Severin’s criteria | |||
| I | 13 | 11 | 0.945 |
| II | 4 | 5 | |
| III | 3 | 2 | |
| IV | 0 | 0 | |