Orthotopic, lateral, and open mouth X-rays, Occipitocervical computed tomography (CT) or 3-dimensional reconstruction CT(3D-CT) were evaluated at pretreatment and posttreatment states in all patients. We checked all patients regarding neck visual analogue scale (VAS) score at initial or preoperative and postoperative or final follow-up. We excluded any patients refused recommended treatments or, were transferred to other hospitals. We reviewed odontoid fracture patients treated in our institute to assess the feasibility and efficacy of the Grauer’s classification.īetween October 2000 and September 2015, we reviewed patients who were diagnosed with odontoid fracture in Korea University Medical Center. This classification divided odontoid fractures into 3 groups, especially type II fractures into three subgroups (subclass A, B, and C). 8) proposed a modified, treatment-oriented classification of odontoid fractures. But classification of Anderson and D’Alonzo has no treatment guideline, and the treatments of odontoid fracture are controversial. Anderson and D’Alonzo 2) proposed a classification of odontoid fractures and their classification has been still used till today. There are variable treatment options from collar immobilization (including collar, halo-vest) to anterior screw fixation or posterior fusion. In younger patients, these fractures are usually made by high-velocity accidents, whereas falls in elderly patients 8). About 20% of cervical spine fractures are odontoid fractures 10). In spinal injury population, over 60% is related in cervical injury 12).
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