Dens fracture or odontoid bone

摘要

In th is report, the authors describe a case of a 3-year-old boy with odontoid bone diagnosed after trauma. The patient presented with p ain following a fall from 3 meters hei ght. Cervical CT images revealed an odontoid bone. The odontoid bone and body of axis had conti nuous intact periosteum. The regional anatomy and etiology of os odontoideum are discussed here.