Vargas Tomas M, Rybicki Frank J, Ledbetter Stephen M, MacKenzie John D
Brigham and Women's Hospital, 75 Francis Street, Boston, MA, 02115, USA.
Emerg Radiol. 2005 Jun;11(4):223-5. doi: 10.1007/s10140-005-0406-3.
Radiography, computed tomography (CT), and magnetic resonance imaging exams of the cervical spine were performed in a 29-year-old man who was ultimately diagnosed with an orthotopic os odontoideum during admission for injuries sustained in a motor vehicle collision. Initial radiography suggested either os odontoideum or an acute fracture of the dens. Further imaging with CT and flexion and extension radiographs confirmed os odontoideum and excluded a dens fracture. Although rare, os odontoideum is an important cervical spine anomaly to consider and to distinguish from an acute fracture of the dens.
对一名29岁男性进行了颈椎的X线摄影、计算机断层扫描（CT）和磁共振成像检查，该男子在因机动车碰撞受伤入院期间最终被诊断为原位齿突骨。最初的X线摄影提示为齿突骨或齿状突急性骨折。进一步的CT检查以及屈伸位X线片证实为齿突骨，并排除了齿状突骨折。尽管齿突骨罕见，但它是一种需要考虑并与齿状突急性骨折相鉴别的重要颈椎异常情况。
