Table 2.
Summary of preoperative and postoperative radiographic data
| Radiographic measure | Patient 1 | Patient 2 | Patient 3 |
|---|---|---|---|
| E-M offset | |||
| Preoperative | −6.4 mm (−2.0 mm) | −3.5 mm (+2.0 mm) | −4.5 mm (0.0 mm) |
| Postoperative | −1.2 mm (−2.0 mm) | +2.4 mm (+2.0 mm) | 0.0 mm (0.0 mm)* |
| Correction | 5.2 mm | 5.9 mm | 4.5 mm |
| Alpha angle | |||
| Preoperative | 80º (45º) | 90º (48º) | 88º (44º) |
| Postoperative | 42º (42º) | 50º (43º) | 54º (50º)* |
| Correction | 38º | 40º | 34º |
* Postoperative measurements for contralateral unaffected hip of Patient 3 were determined from cross-table lateral radiograph because frog-lateral was not obtained; values for the contralateral unaffected hip are shown in parentheses; E-M = epiphyseal-metaphyseal.