| | eMedicine - Fractures, Cervical Spine : Article by Emilio Belaval, MD (Site not responding. Last check: 2007-10-16) |
 | | This fracture occurs when the head is hyperextended and the posterior neural arch of C1 is compressed between the occiput and the strong and prominent spinous process of C2, causing the weak posterior arch of C1 to fracture (see Image 8A). |
 | | Radiographically, this fracture is evidenced by a vertical fracture line in the frontal projection and by comminution and protrusion of the vertebral body anteriorly and posteriorly with respect to the contiguous vertebrae in the lateral view (see Image 9). |
 | | Burst fracture of vertebral body caused by a vertical (axial) compression mechanism is stable mechanically and involves disruption of the anterior and middle columns, with variable degree of protrusion of the latter. |
| www.emedicine.com /emerg/topic189.htm (6591 words) |