Fracture pattern | Subtype | N (%) |
---|---|---|
Anterior element | ||
Anterior + anterior elements | Fractures of superior articular facet and/or posterior vertebral wall of C2 on different sides | 38/18.1 |
Anterior + middle elements | One fracture of superior articular facet and/or posterior vertebral wall of C2 on one side and another through the C2 PIC on the other side | 61/29.0 |
Anterior + posterior elements | One fracture of superior articular facet and/or posterior vertebral wall of C2 on one side and another through the contralateral inferior articular facet or lamina | 79/37.6 |
Middle element | ||
Middle + middle elements | Fractures PIC of C2 on different sides | 13/6.2 |
Middle + posterior elements | One fracture through C2 PIC on one side and another through the contralateral inferior articular facet or lamina | 19/9.0 |