Table 4.
Patient, core injury, and treatment characteristics
| Patient characteristics | Four reference hospitals | Other hospitals | Comparison (p value) |
|---|---|---|---|
| Number (%) | 536 (26) | 1537 (74) | – |
| Mean age ± SD (years) | 58 ± 22 | 57± 21 | 0.16 |
| Females (%) | 113 (21) | 377 (25) | 0.11 |
| Polytraumatized patients (%) | 17 (3) | 34 (2) | 0.22 |
| ISS score ± SD | 11 ± 6 | 13 ± 8 | < 0.001 |
| Length of hospital stay | 18 ± 12 | 22 ± 18 | < 0.001 |
| Fracture type A (%) | 255 (48) | 735 (49) | 0.023 |
| Fracture type B (%) | 212 (40) | 509 (34) | |
| Fracture type C (%) | 69 (13) | 252 (17) | |
| Anterior column fracture (%) | 114 (21) | 299 (20) | 0.020 |
| Anterior wall fracture (%) | 28 (5) | 84 (6) | |
| Posterior column fracture (%) | 24 (5) | 61 (4) | |
| Posterior wall fracture (%) | 74 (14) | 240 (16) | |
| Transverse fracture (%) | 30 (6) | 102 (7) | |
| T-type fracture (%) | 27 (5) | 84 (6) | |
| Transverse + posterior wall fracture (%) | 23 (4) | 94 (6) | |
| Posterior column + posterior wall fracture (%) | 15 (3) | 48 (3) | |
| Anterior column + posterior hemitransverse fracture (%) | 117 (22) | 235 (15) | |
| Both columns fracture (%) | 68 (13) | 259 (17) | |
| Unknown/not classifiable fracture (%) | 16 (3) | 31 (2) | |
| Surgically treated patients (%) | 403 (75) | 992 (65) | < 0.001 |
| Kocher-Langenbeck approach (%) | 122 (30) | 373 (38) | < 0.001 |
| Ilioinguinal approach (%) | 193 (48) | 423 (43) | |
| Smith-Peterson/iliofemoral approach (%) | 4 (1) | 4 (0.4) | |
| Extended iliofemoral approach (%) | – | 2 (0.2) | |
| Maryland approach (%) | – | 12 (1) | |
| Triradiate approach (%) | 3 (0.7) | – | |
| Ventral + dorsal simultaneously approach (%) | – | 7 (0.7) | |
| Ventral + dorsal staged approach (%) | 1 (0.3) | 2 (0.2) | |
| Limited approach (%) | – | 14 (1) | |
| Stoppa approach (%) | 17 (4) | 8 (0.8) | |
| Percutaneous approach (%) | 24 (6) | 50 (5) | |
| Other approach (%) | 39 (10) | 97 (10) | |
| Outcomes | |||
| NI at admission (%) | 18 (3) | 58 (4) | 0.66 |
| Persisted until discharge | 17 (3) | 47 (3) | 0.90 |
| Resolved until discharge | 1 (0.2) | 10 (0.7) | 0.20 |
| Intervention-related NI (%) | 3 (0.6) | 24 (2) | 0.08 |
| Persisted until discharge | 3 (0.6) | 20 (1) | 0.16 |
| Resolved until discharge | – | 4 (0.3) | 0.31 |
| Other hospital-acquired NI (%) | 13 (2) | 33 (2) | 0.71 |
| NI at discharge (%) | 33 (6) | 101 (7) | 0.74 |
ISS = Injury Severity Score; NI = nerve injury.