Traumatic pars fractures (spondylolysis) of C2 extending into right foramen transversarium in keeping with a Hangman's fracture (Levine and Edwards type II).  Unfortunately, this was not followed by a contrast study to assess the right vertebral artery.  However, the patient was neurologically free and stable as she walked through to do plain film.  Subsequent MRI shows no cord contusion/edema.