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Radiographic evaluation
| Measurement | Preoperative | 12-month Post-operative |
|---|---|---|
| Alpha angle (degrees) | 74 (SD 12) | 46 (SD 9) |
| CE angle (SD) degrees | 32 (7) | NA |
| Tönnis grade 1 (no) | 48 | 41 |
| Tönnis grade 2 (no) | 31 | 34 |
| Tönnis grade 3 (no) | 0 | 1 |
| Tönnis progression grade 1 to 2 | NA | 7 |
| Tönnis progression grade 2 to 3 | NA | 2 |
| Tönnis progression grade 1 to 3 | NA | 1 |
| Any joint space of 1 (mm) | 3 | 10 |
| Any joint space of 2 (mm) | 17 | 14 |
| Any joint space of 3+ (mm) | 57 | 52 |
