Subjects will include all patients (including children) after blunt trauma in whom cervical spine injury has not been ruled out admitted to MetroHealth Medical Center from 10/1/2004-9/30/2006. We are excluding patients with an obvious neurologic deficit attributable to the cervical spine. We are excluding patients with abnormalities of the cervical spine that are identified on either plain films or CT. We are also excluding those patients in whom the cervical spine can be cleared clinically due to normal mental status.