Table 2.
Results of single-factor analysis.
| Variable | Functional score (%) |
Mean rank | Z/χ2 | P | ||||
|---|---|---|---|---|---|---|---|---|
| Poor | Fair | Good | Excellent | Total | ||||
| Sex | ||||||||
| Male | 4 (9.8) | 5 (12.2) | 16 (39.0) | 16 (39.0) | 41 (100.0) | 23.54 | −1.241 | 0.215 |
| Female | 0 (0.0) | 0 (0.0) | 3 (42.9) | 4 (57.1) | 7 (100.0) | 30.14 | ||
| Age (y) | ||||||||
| <20 | 0 (0.0) | 0 (0.0) | 1 (100.0) | 0 (0.0) | 1 (100.0) | 19.00 | 0.705 | 0.872 |
| 20–40 | 1 (7.7) | 0 (0.0) | 6 (46.2) | 6 (46.2) | 13 (100.0) | 26.73 | ||
| 40–60 | 2 (6.9) | 4 (13.8) | 12 (41.4) | 11 (37.9) | 29 (100.0) | 23.60 | ||
| ≥60 | 1 (20.0) | 1 (20.0) | 0 (0.0) | 3 (60.0) | 5 (100.0) | 25.00 | ||
| AFI | ||||||||
| <25.0% | 3 (27.3) | 1 (9.1) | 5 (45.5) | 2 (18.2) | 11 (100.0) | 16.95 | 5.567 | 0.135 |
| 25.0%–50.0% | 0 (0.0) | 4 (17.4) | 9 (39.1) | 10 (43.5) | 23 (100.0) | 25.39 | ||
| 50.0%–75.0% | 1 (14.3) | 0 (0.0) | 2 (28.6) | 4 (57.1) | 7 (100.0) | 27.79 | ||
| ≥75.0% | 0 (0.0) | 0 (0.0) | 3 (42.9) | 4 (57.1) | 7 (100.0) | 30.14 | ||
| Trauma etiology | ||||||||
| Fall from height | 0 (0.0) | 2 (28.6) | 3 (42.9) | 2 (28.6) | 7 (100.0) | 21.14 | 0.769 | 0.681 |
| Crush injury | 1 (16.7) | 0 (0.0) | 3 (50.0) | 2 (33.3) | 6 (10.0) | 22.75 | ||
| Traffic accident | 3 (8.6) | 3 (8.6) | 13 (37.1) | 16 (45.7) | 35 (100.0) | 25.47 | ||
| Hip dislocation | ||||||||
| Yes | 2 (6.5) | 4 (12.9) | 10 (32.3) | 15 (48.4) | 31 (100.0) | 25.82 | −0.951 | 0.342 |
| No | 2 (11.8) | 1 (5.9) | 9 (52.9) | 5 (29.4) | 17 (100.0) | 22.09 | ||
| Primary sciatic nerve injury | ||||||||
| Yes | 2 (18.2) | 2 (18.2) | 4 (36.4) | 3 (27.3) | 11 (100.0) | 19.14 | −1.557 | 0.120 |
| No | 2 (5.4) | 3 (8.1) | 15 (40.5) | 17 (45.9) | 37 (100.0) | 26.09 | ||
| Lower limb fracture | ||||||||
| Yes | 3 (17.6) | 1 (5.9) | 7 (41.2) | 6 (35.3) | 17 (100.0) | 22.26 | −0.881 | 0.378 |
| No | 1 (3.2) | 4 (12.9) | 12 (38.7) | 14 (45.2) | 31 (100.0) | 25.73 | ||
| Thoracic and abdominal injury | ||||||||
| Yes | 0 (0.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) | |||
| No | 4 (8.3) | 5 (10.4) | 19 (39.6) | 20 (41.7) | 48 (100.0) | |||
| Brain injury | ||||||||
| Yes | 0 (0.0) | 2 (40.0) | 2 (40.0) | 1 (20.0) | 5 (100.0) | 18.10 | −1.162 | 0.245 |
| No | 4 (9.3) | 3 (7.0) | 17 (39.5) | 19 (44.2) | 43 (100.0) | 25.24 | ||
| Iatrogenic sciatic nerve injury | ||||||||
| Yes | 0 (0.0) | 0 (0.0) | 1 (100.0) | 0 (0.0) | 1 (100.0) | 19.00 | −0.427 | 0.669 |
| No | 4 (8.5) | 5 (10.6) | 18 (38.3) | 20 (42.6) | 47 (100.0) | 24.62 | ||
| Trauma-to-surgery time (d) | ||||||||
| ≤14 | 3 (7.9) | 2 (5.3) | 18 (47.4) | 15 (39.5) | 38 (100.0) | 24.76 | −0.273 | 0.785 |
| >14 | 1 (10.0) | 3 (30.0) | 1 (10.0) | 5 (50.0) | 10 (100.0) | 23.50 | ||
| Surgical duration (min) | ||||||||
| ≤120 | 1 (6.7) | 0 (0.0) | 5 (33.3) | 9 (60.0) | 15 (100.0) | 29.60 | −1.830 | 0.067 |
| >120 | 3 (9.1) | 5 (15.2) | 14 (42.4) | 11 (33.3) | 33 (100.0) | 22.18 | ||
| Blood loss (ml) | ||||||||
| ≤1000 | 2 (5.1) | 2 (5.1) | 17 (43.6) | 18 (46.2) | 39 (100.0) | 26.54 | −2.259 | 0.024 |
| >1000 | 2 (22.2) | 3 (33.3) | 2 (22.2) | 2 (22.2) | 9 (100.0) | 15.67 | ||
| Physical therapy duration (m) | ||||||||
| ≤12 | 1 (14.3) | 1 (14.3) | 5 (71.4) | 0 (0.0) | 7 (100.0) | 14.93 | −2.105 | 0.035 |
| >12 | 3 (7.3) | 4 (9.8) | 14 (34.1) | 20 (48.8) | 41 (100.0) | 26.13 | ||
| Reduction quality | ||||||||
| Anatomical | 0 (0.0) | 2 (6.9) | 9 (31.0) | 18 (62.1) | 29 (100.0) | 30.28 | 14.862 | 0.001 |
| Good | 3 (20.0) | 2 (13.3) | 8 (53.3) | 2 (13.3) | 15 (100.0) | 16.70 | ||
| Poor | 1 (25.0) | 1 (25.0) | 2 (50.0) | 0 (0.0) | 4 (100.0) | 11.88 | ||
| Heterotopic ossification | ||||||||
| No | 1 (3.2) | 1 (3.2) | 13 (41.9) | 16 (51.6) | 31 (100.0) | 28.15 | 8.202 | 0.042 |
| Grade I | 2 (18.2) | 1 (9.1) | 5 (45.5) | 3 (27.3) | 11 (100.0) | 20.23 | ||
| Grade II | 1 (20.0) | 2 (40.0) | 1 (20.0) | 1 (20.0) | 5 (100.0) | 14.80 | ||
| Grade III | 0 (0.0) | 1 (100.0) | 0 (0.0) | 0 (0.0) | 1 (100.0) | 7.00 | ||
| Traumatic arthritis | ||||||||
| Yes | 0 (0.0) | 1 (50.0) | 1 (50.0) | 0 (0.0) | 2 (100.0) | 13.00 | −1.276 | 0.202 |
| No | 4 (8.7) | 4 (8.7) | 18 (39.1) | 20 (43.5) | 46 (100.0) | 25.00 | ||
| Avascular necrosis of the femoral head | ||||||||
| Yes | 1 (100.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 1 (100.0) | 2.50 | −1.708 | 0.088 |
| No | 3 (6.4) | 5 (10.6) | 19 (39.6) | 20 (41.7) | 47 (100.0) | 24.97 | ||
AFI, acetabular fracture index