A commonly used classification for Fractures of the Occipital condyle is the classification according to Anderson and Montesano, which was published in 1988 [^1].
Classification
Fracture type | Description |
Type I | Comminution of the occipital condyle caused by axial force. Minimal or no displacement of the fracture fragments into the Foramen magnum. |
Type II | Fracture of the occipital condyle as an extension of a fracture at the foramen magnum. Most likely caused by direct force applied to the skull. |
Type III | Avulsion of the occipital condyle caused by the Alar ligaments. Most likely as a result of rotation and/or lateral flexion of the head. Unstable fracture. |
