Table 6.
Tönnis grades for 28 hips preoperatively and at the last follow-up
| Tönnis grade | Before operation, n (%) | Last follow-up, n (%) |
|---|---|---|
| Group T0 | 12 (42.86) | 13 (46.43) |
| Group T1 | 10 (35.71) | 8 (28.57) |
| Group T2 | 6 (21.43) | 7 (25.00) |
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