| Number hip | Classification according to Severin | ||||||
1 (%) | 2 (%) | 3 (%) | 4 (%) | 5 (%) | 6 (%) | 7 (%) | ||
Primery operation | 139 | 92 (66.2) | 31 (22.3) |
| 14 (10.1) |
| 2 (1.4) |
|
Femoral shortening | 42 | 35 (83.3) | 5 (11.9) |
| 2 (4.8) |
|
|
|
| 181 | 127 (70.2) | 36 (19.9) |
| 16 (8.8) |
| 2 (1.1) |
|