Table 2.
Clinical results preoperatively and at minimum 5-year followup
| Parameter (best-worst score possible) | Preoperative value (n = 41) | Followup value (n = 35) | p value |
|---|---|---|---|
| Anterior impingement test (% positive) [43] | 93 | 49 | 0.002 |
| Posterior impingement test (% positive) [43] | 66 | 20 | 0.157 |
| Limp (% positive) | 76 | 9 | < 0.001 |
| Abductor strength (% with M5 of all hips) [27] | 17 | 91 | < 0.001 |
| ROM (° ± SD; range) | |||
| Flexion | 94 ± 14 (50–130) | 93 ± 16 (35–130) | 0.466 |
| Extension | 4 ± 6 (0–20) | 7 ± 7 (0–20) | 0.121 |
| Internal rotation | 18 ± 15 (0–85) | 25 ± 15 (0–60) | 0.045 |
| External rotation | 25 ± 12 (0–50) | 32 ± 14 (5–70) | 0.013 |
| Abduction | 24 ± 10 (0–45) | 37 ± 13 (10–50) | 0.004 |
| Adduction | 18 ± 11 (5–45) | 13 ± 5 (5–20) | 0.176 |
| Merle d’Aubigné scores (18–0) ± SD (range) [28] | 14 ± 1.7 (9–17) | 17 ± 1.5 (13–18) | < 0.001 |
| Pain (6–0) | 4 ± 1.1 (1–5) | 5 ± 0.8 (3–6) | < 0.001 |
| Mobility (6–0) | 5 ± 0.7 (3–6) | 6 ± 0.5 (5–6) | 0.115 |
| Walking ability (6–0) | 5 ± 0.9 (2–6) | 6 ± 0.6 (3–6) | < 0.001 |
| WOMAC (0–100) ± SD (range) [4] | 6 ± 23 (0–100) | ||
| Pain (0–100) | – | 7 ± 24 (0–100) | – |
| Stiffness (0–100) | 8 ± 25 (0–100) | ||
| Function (0–100) | 5 ± 24 (0–100) | ||
| Harris hip score (100–0) ± SD (range) [20] | – | 83 ± 10 (59–100) | – |
| SF-12 scores ± SD (range) [13, 45] | |||
| Physical component (100–0) | – | 47 ± 7 (23–59) | – |
| Mental component (100–0) | 55 ± 9 (29–64) | ||
| UCLA activity score (10–0) ± SD (range) [47] | – | 6 ± 2 (2–10) | – |
Continuous parameters are expressed as mean ± SD and range in parentheses.