Table 2.
Clinical and radiographic measures (n = 12 hips with mean follow-up of 49 months)
| Pre-operative | Post-operative | p value | |
|---|---|---|---|
| Radiographic measures | |||
| Neck-shaft angle (°) | 126 (121–130) | 123 (119–128) | 0.052 |
| Center-trochanter distance (mm) (+ = superior, − = inferior) | 5 (−3 to 10) | 3 (−2 to 9) | 0.510 |
| Lateral center edge angle (°) | 13 (8–18) | 12 (7–16) | 0.406 |
| Extrusion index (%) | 75 (72–79) | 70 (63–76) | 0.127 |
| Disruption of Shenton’s Line | 5 | 1 | 0.155 |
| Leg length discrepancy (mm) | 12 (7–17) | 9 (5–14) | 0.976 |
| Pain | None—4 | None—9 | 0.100 |
| Mild—3 | Mild—3 | >0.999 | |
| Moderate—5 | Moderate—0 | 0.037 | |
| Severe—0 | Severe—0 | >0.999 | |
| Clinical range of motion and gait | |||
| Internal rotation (°) | 21 (15–27) | 43 (31–54) | 0.012 |
| External rotation (°) | 48 (40–55) | 42 (33–51) | 0.626 |
| Abduction (°) | 30 (25–35) | 58 (52–64) | < 0.005 |
| Impingement | 9 | 2 | 0.012 |
| Limp | 8 | 1 | 0.009 |
| Trendelenburg sign | 8 | 1 | 0.009 |
All continuous data presented as means with 95 % CI in parentheses
All categorical data presented as absolute values
Bolded p values represent statistically significant findings (p < 0.05)