Demographic features of patients with concomitant facial fractures and closed head injuries in Maricopa, Arizona

Objective. The aim of this study was to investigate the demographic profile of Native American patients with concomitant facial fractures and closed head injuries (CHIs) and to explore the validation of the craniofacial crumple zone. Study Design. This was a retrospective, observational, case-control study of 2131 maxillofacial fractures from 2010 to 2014, of which 173 (8%) had concomitant CHIs. Results. Of the study patients, 133 (77%) were males (mean age 40.6 years). Only 2.1% of the local population was Native American, but this group represented 24% of the patients with Cl Its and sustained 4.6 times more (P value < .001) assault injuries and 2.6 times more concussion (P value < .001) compared with other groups. Other trauma comparisons were not significant. Of the 173 study patients, 86 (50%), had blood alcohol levels which exceeded 80 mg/100 ml compared with 93% of the Native Americans. Conclusions. Native American patients had a highly significant predisposition to violence and road traffic accidents resulting in maxillofacial fractures and CHIs. The high blood alcohol levels found in this group also reflected longstanding serious sociologic problems. This study provides a useful model to investigate the relative ethnic/racial role of comminuted paranasal structures for the protection of the brain (i.e., the crumple zone).