Table 2.
baseline and outcomes of the last fellow-up
| Variable | Pre-operation | Last follow-up | p values |
|---|---|---|---|
| Clinical outcomes | |||
| VAS score | |||
| At rest | 2.3(1.5–2.8) | 1.2 (0–3.4) | p < 0.001 |
| With activity | 4.0 (3.1–4.6) | 2.8(1.9–4.8) | p < 0.001 |
| Hip Harris score | 70.5 (66–74) | 82.5 (52–92) | p < 0.001 |
| ROM (°) | |||
| Flexion | 90.8 (86.4–96.8) | 104.5 (76.3–115.7) | p < 0.001 |
| Abduction | 31.1 (27.6–35.2) | 38.5 (22.0–43.8) | p < 0.001 |
| Adduction | 16.6 (15.9–17.4) | 22.3 (16.0–24.3) | p < 0.001 |
| External rotation | 30.2 (28.8–31.6) | 39.1 (21.8–43.6) | p < 0.001 |
| Internal rotation | 11.2(10.1–12.7) | 18.9(9.5–22.2) | p < 0.001 |
| Health status | |||
| WOMACa | |||
| Pain (0–20) | 9.4 (5–11) | 4.4 (2–12) | p < 0.001 |
| Stiffness (0–8) | 3.1 (0–4) | 2.2 (0–3) | p = 0.002 |
| Function (0–68) | 44.6 (32–58) | 28.3 (19–60) | p < 0.001 |
| SF-36b | |||
| General health | 56.4 (47.0–66.0) | 62.5 (45.0–74.0) | p < 0.001 |
| Mental health | 70.6 (65.0–74.0) | 71.2 (58.0–80.0) | p = 0.122 |
| Bodily pain | 67.2 (60.0–73.0) | 82.4 (60.0–90.0) | p < 0.001 |
| Physical function | 59.9 (46.0–65.0) | 74.8 (48.0–86.0) | p < 0.001 |
| Social function | 65.4 (55.0–72.0) | 76.9 (53.0–84.0) | p < 0.001 |
aWOMAC dimension scores range 0–20 (pain), 0–8 (stiffness) and 0–68 (physical function); a higher score indicates increased pain or stiffness or worse physical function
bSF-36 dimension scores range 0–100: a higher score for each dimension indicates the better health-related quality of life