Table 2.
Clinical data for Group I and Group II
| Parameter | Group I | Group II | ||
|---|---|---|---|---|
| Preoperative | 10-year followup | Preoperative | 10-year followup | |
| Merle d’Aubigné-Postel score* [3] | 15 ± 1.7 (8–18) [14–15] | 16 ± 2.1 (9–18)‡ [15–17] | 15 ± 2.1 (7–18) [14–15] | 16 ± 1.9 (10–18)‡ [16–16] |
| Impingement test [38] (% of all hips) | 79 | 10†,‡ | 62 | 26‡ |
| Apprehension test [38] (% of all hips) | 48 | 11‡ | 29 | 20 |
| Limp (% of all hips) | 28 | 10†,‡ | 35 | 26 |
| Trendelenburg sign [9] (% of all hips) | 28 | 11 | 20 | 17 |
| ROM | ||||
| Flexion* (°) | 112 ± 15 (90–140) [107–117] | 99 ± 11 (70–120)‡ [95–103] | 112 ± 18 (80–140) [109–115] | 101 ± 12 (80–130)‡ [98–103] |
| Extension* (°) | 2 ± 6 (−20 to 15) [0–4] | 5 ± 5 (0–15) [3–7] | 1 ± 6 (−10 to 20) [0–2] | 6 ± 8 (0–30)‡ [4–7] |
| Internal rotation* (°) | 28 ± 19 (−50 to 70) [22–34] | 22 ± 15 (0–45) [17–27] | 26 ± 16 (−10 to 70) [23–29] | 19 ± 14 (0–60)‡ [16–21] |
| External rotation* (°) | 38 ± 11 (10–60) [34–41] | 33 ± 12 (0–50) [28–37] | 39 ± 15 (10–80) [36–42] | 30 ± 17 (0–80)‡ [27–33] |
| Abduction* (°) | 39 ± 12 (10–80) [36–43] | 37 ± 12 (10–60) [32–42] | 38 ± 11 (10–70) [36–40] | 34 ± 12 (0–60) [31–36] |
| Adduction* (°) | 29 ± 10 (10–60) [26–33] | 28 ± 11 (10–50) [23–33] | 28 ± 9 (1–50) [26–30] | 26 ± 8 (10–50) [24–27] |
* Values of continuous parameters are expressed as mean ± SD with range in parentheses and confidence intervals in brackets; †significant difference compared with Group II; ‡significant difference compared with preoperative status.