| CAUSE | Total | |||||||
| twist | fall | Sport | blow | RTA | other | |||
| fracture | A11 | 0 | 1 | 0 | 0 | 0 | 0 | 1 |
| A12 | 0 | 0 | 0 | 0 | 1 | 0 | 1 | |
| A21 | 2 | 1 | 0 | 0 | 1 | 0 | 4 | |
| B11 | 0 | 1 | 0 | 0 | 0 | 0 | 1 | |
| B12 | 1 | 0 | 1 | 0 | 0 | 0 | 2 | |
| B21 | 1 | 0 | 0 | 0 | 2 | 0 | 3 | |
| B22 | 3 | 8 | 0 | 0 | 4 | 0 | 15 | |
| B23 | 0 | 6 | 0 | 0 | 0 | 0 | 6 | |
| B32 | 0 | 2 | 0 | 0 | 3 | 0 | 5 | |
| B33 | 0 | 4 | 0 | 0 | 4 | 0 | 8 | |
| C11 | 0 | 0 | 0 | 0 | 1 | 0 | 1 | |
| C12 | 0 | 2 | 0 | 0 | 0 | 1 | 3 | |
| C22 | 1 | 1 | 0 | 0 | 2 | 0 | 4 | |
| C23 | 0 | 1 | 0 | 0 | 1 | 0 | 2 | |
| C32 | 0 | 3 | 0 | 1 | 2 | 0 | 6 | |
| C33 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | |
| Total | 9 | 30 | 1 | 1 | 21 | 1 | 63 | |