Table 2.
Further description of C0-C21 and C3-C7 (subaxial)2 CS-Fxs
| CS-Fx main category | CS-Fx sub category | N (%) |
|---|---|---|
| C0-C21 | C0 Fx | 219 (10.2) |
| C1 Fx | 245 (11.4) | |
| C2 Odontoid Fx | 419 (19.5) | |
| C2 Hangman Fx | 59 (2.7) | |
| C2 Other Fx | 141 (6.5) | |
| Craniocervical dislocation | 9 (0.4) | |
| Atlantoaxial distraction | 8 (0.4) | |
| Atlantoaxial rotation | 32 (1.5) | |
| C3-C7 (subaxial)2 | C2/C3 “Instability” | 46 (2.1) |
| C3/C4 “Instability” | 175 (8.1) | |
| C4/C5 “Instability” | 250 (11.6) | |
| C5/C6 “Instability” | 366 (17.0) | |
| C6/C7 “Instability” | 566 (26.3) | |
| C7/Th1 “Instability” | 178 (8.3) |
1C0-C2: Upper cervical region including the occipital condyle (C0), cervical vertebra C1, and cervical vertebra C2. The C0-C2 CS-Fxs are described by fracture morphology or the type of dislocation with dominating ligamentous injury
2C3-C7 (subaxial): Lower cervical region involving cervical vertebrae C3 to C7. The subaxial CS-Fxs are described by the level of suspected instability