Table 4.
Clinical results preoperatively and at followup of the hips with a preserved joint (n = 90 hips)
| Parameter (best-worst score possible) | Preoperative | Five-year followup | p value |
|---|---|---|---|
| Merle d’Aubigné-Postel score [26] (18–0) | 15 ± 1 (9–17) | 17 ± 1 (12–18) | < 0.001 |
| Pain (6–0) | 4 ± 0.7 (2–5) | 5 ± 0.9 (2–6) | < 0.001 |
| Mobility (6–0) | 6 ± 0.5 (4–6) | 6 ± 0.2 (5–6) | 0.022 |
| Walking ability (6–0) | 6 ± 0.7 (2–6) | 6 ± 0.2 (5–6) | 0.016 |
| WOMAC [4] (0–100) | – | 8 ± 12 (0–52) | – |
| Pain (0–100) | 10 ± 14 (0–56) | ||
| Stiffness (0–100) | 11 ± 14 (0–56) | ||
| Function (0–100) | 7 ± 12 (0–58) | ||
| Harris hip score [14] (100–0) | – | 92 ± 12 (48–100) | – |
| SF-12 [12, 48] | – | – | |
| Physical Component Scale (100–0) | 50 ± 8 (20–65) | ||
| Mental Component Scale (100–0) | 54 ± 8 (21–67) | ||
| University of California Los Angeles activity score [51] (10–0) | – | 7 ± 2 (2–10) | – |
| Anterior impingement test (percent positive) | 95 | 17 | < 0.001 |
| ROM | |||
| Flexion | 102 ± 11 (85–130) | 102 ± 9 (80–130) | 0.926 |
| Extension | 1 ± 4 (0–20) | 0 ± 2 (0–10) | 0.149 |
| Internal rotation | 14 ± 10 (0–45) | 19 ± 8 (0–40) | 0.003 |
| External rotation | 29 ± 11 (5–60) | 30 ± 8 (10–45) | 0.767 |
| Abduction | 31 ± 10 (0–60) | 39 ± 6 (20–50) | < 0.001 |
| Adduction | 21 ± 8 (0–35) | 24 ± 7 (10–40) | 0.200 |
Values of continuous parameters are expressed as mean ± SD with range in parentheses.