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  • Title: Anterior discectomy/corpectomy and fusion with internal fixation for the treatment of unstable hangman's fractures: a retrospective study of 38 cases.
    Author: Li Z, Li F, Hou S, Zhao Y, Mao N, Hou T, Tang J.
    Journal: J Neurosurg Spine; 2015 Apr; 22(4):387-93. PubMed ID: 25635631.
    Abstract:
    OBJECT: The object of this study was to describe the authors' method of anterior discectomy/corpectomy and fusion combined with internal fixation for the treatment of unstable hangman's fractures and to evaluate the clinical and radiological outcomes. METHODS: This study included 38 consecutive patients who underwent surgery for unstable hangman's fractures between July 2002 and October 2011 and were followed up for more than 2 years. The patients were 18 women and 20 men with a mean age of 42.8 years (range 20-69 years). The fracture resulted from a fall in 9 patients, a motor vehicle accident in 21 patients, and a motorcycle accident in 8 patients. The Levine-Edwards classification was Type II in 13 patients, Type IIA in 20 patients, and Type III in 5 patients. All patients underwent anterior C2-3 intervertebral disc excision or C-3 corpectomy, decompression and reduction, interbody implantation of an autologous iliac bone graft, and internal fixation with a titanium plate. Pain was assessed before and after surgery using a visual analog scale (VAS). Myelopathy was graded using the Japanese Orthopaedic Association (JOA) score. Patient satisfaction with the surgery was assessed using Odom's grading system. Anteroposterior, lateral, and dynamic (flexion/extension) radiographs were obtained during the follow-up period. Two-dimensional CT studies with sagittal and coronal reconstructions were routinely performed. RESULTS: The mean follow-up period was 49.2 months (range 24-132 months). There was a significant decrease between the preoperative and final follow-up VAS scores (mean [SD] 7.56 ± 1.52 vs 2.36 ± 1.25, p < 0.05) and a significant increase between the preoperative and final follow-up JOA scores (12.58 ± 1.34 vs 16.13 ± 1.17, p < 0.05). Postoperative radiographs showed satisfactory reduction of the fracture in all cases. Postoperative complications included transient neurological deficits (3 cases), hematoma (2 cases), temporary dysphagia (5 cases), temporary hoarseness (2 cases), prolonged pain at the iliac crest donor site (4 cases), and wound infection at the iliac crest donor site (2 cases). Solid fusion was achieved in 94.7% of patients at the final follow-up. CONCLUSIONS: Anterior discectomy/corpectomy and fusion combined with internal fixation is a safe and effective procedure for the treatment of unstable hangman's fractures.
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