• Zachary J Grabel, Sheyan J Armaghani, Catphuong Vu, Amit Jain, and S Tim Yoon.
• Department of Orthopaedic Surgery, Emory University School of Medicine, Atlanta, Georgia, USA. Electronic address: zgrabel@emory.edu.
• World Neurosurg. 2018 May 1; 113: e535-e541.

BackgroundThe optimal form of treatment for C2 spine fractures is controversial. This investigation analyzed the variations in treatment of C2 fractures over time, by age group, and by geographic location.MethodsThe Nationwide Emergency Department Sample database was queried to identify patients 18 years and older who sustained C2 fracture without neurologic injury from 2006 to 2012. Subsequently, patients were further filtered based on the intervention they received: collar, halo, and surgery. Regions of hospital used in analysis were defined as Northeast, Midwest, South, and West. Linear regression models were used to analyze trends for C2 incidence rates and treatment type. Analysis of variance tests were used to determine differences among procedure groups when stratified by regions and age groups.ResultsSurgical intervention for C2 fracture increased from 36.5% in 2006 to 55.7% in 2012 (r = 0.116, P < 0.001). In contrast, the rate of halo use decreased from 57.8% in 2006 to 37.1% in 2012 (r = -0.139, P < 0.001). Surgery displayed increasing trend across all age groups. A greater proportion of patients in the Northeast were treated by collar compared with all other regions (P < 0.001). In contrast, halo use was significantly lower in the Northeast than the other 3 regions (P < 0.001).ConclusionsThis investigation demonstrated that surgical management of C2 fractures is increasing in frequency over time and at all age groups. Furthermore, the treatment of these fractures varies by region-the Northeast had the highest incidence of collar use and lowest rate of halo use.Copyright © 2018 Elsevier Inc. All rights reserved.

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