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Radiographic Evaluation of Wall Relationships, Coverage and Tönnis grade
| PAO (n=30) | SDO (n=30) | |||
|---|---|---|---|---|
| preoperative | postoperative | preoperative | postoperative | |
| Anteversion | 0 | 29 | 0 | 27 |
| Retroversion | 30 | 1 | 30 | 3 |
| Crossover sign | 30 | 1 | 30 | 3 |
| Posterior wall sign | 27 | 3 | 11 | 11 |
| Tönnis Grade 0 | 12 | 7 | 11 | 8 |
| Tönnis Grade 1 | 18 | 21 | 19 | 17 |
| Tönnis Grade 2 | 0 | 2 | 0 | 4 |
| Tönnis Grade 3 | 0 | 0 | 0 | 1 |
SDO, surgical dislocation and osteochondroplasty
PAO, periacetabular osteotomy
