Parameters | |
---|---|
Morphological parameters on supine pelvic radiographs | |
 Lateral center-edge angle (°) a | 11.1 (− 14.8 to 17.4) |
 Medial center-edge angle (°) a | 49.2 ± 8.9 |
 Acetabular arc (°) a | 58.3 ± 9.7 |
 Tönnis angle (°) a | 22.9 (10.6–34.7) |
 Sharp angle (°) a | 47.8 ± 3.5 |
 Extrusion index (%) a | 36.5 (27.1–63.8) |
 Crossover sign b | 13 (29.5) |
 Posterior wall sign b | 33 (75.0) |
 Anterior wall index a | 0.26 (−0.02 to 0.53) |
 Posterior wall index a | 0.87 ± 0.18 |
 Roundness index (%) a | 52.4 ± 2.2 |
 Femoro-epiphyseal acetabular roof index a | 4.3 (−1.5 to 20.9) |
Standing anterior pelvic plane angle (°) a | 1.7 ± 6.0 |