Implication of differences in the incidence of orbital emphysema in ethmoidal and maxillary sinus fractures.

This study investigated the incidence of orbital emphysema in patients with fractures of the ethmoidal cells or maxillary sinus. We noted that mucosal destruction is essential for orbital emphysema to occur. Computed tomographic examination and intraoperative studies of 58 patients with orbital bone fracture were performed with the patients divided into 2 groups according to the location of the fracture lines.