Table 1.
Frequencies of nerve injuries by AO/OTA fracture type
| Fracture type | Fracture Type A (partial articular fractures) | Fracture Type B (partial articular, transverse fractures) | Fracture Type C (complete articular, both columns) | Unknown/not classifiable | Total |
|---|---|---|---|---|---|
| Number (%) | 990 (48) | 721 (35) | 321 (16) | 41 (2) | 2073 (100) |
| NI at admission (%) | 44 (4) | 23 (3) | 7 (2) | 2 (5) | 76 (4) |
| Persisted until discharge (%) | 39 (4)* | 19 (3) | 6 (2) | 1 (2) | 65 (3)* |
| Resolved until discharge (%) | 5 (0.5) | 4 (0.6) | 1 (0.3) | 1 (2) | 11 (0.5) |
| Intervention-related NI (%) | 10 (2) | 13 (2) | 4 (2) | – | 27 (2) |
| Persisted until discharge (%) | 10 (2)* | 11 (2) | 3 (1) | – | 24 (2)* |
| Resolved until discharge (%) | – | 2 (0.4) | 1 (0.4) | – | 3 (0.2) |
| Other hospital-acquired NI (%) | 13 (1) | 19 (3) | 13 (4) | 1 (2) | 46 (2) |
| NI at discharge (%) | 61 (6) | 49 (7) | 22 (7) | 2 (5) | 134 (7) |
The proportions of the intervention-related nerve injuries were calculated based on the number of surgically treated cases (n = 1395); *there was one patient who had both a nerve injury at admission and an intervention-related nerve injury; NI = nerve injury.