Two Cases of Bilateral Orbital Floor Pure-type Blowout Fractures

Abstract

 Bilateral orbital floor blowout fractures are rare. Most cases are classified as impure-type fractures, which are characterized by a fracture that extends to the surrounding orbital margin. Bilateral orbital floor blowout fractures of the pure type are extremely rare. Most reported cases of pure-type fractures are associated with assault. In this report, we present two cases of bilateral orbital floor blowout fractures resulting from a single traumatic event. Both cases involved fractures in the bilateral infraorbital walls and nasal bones, without any fractures in the periorbital area; thus, they were classified as pure-type fractures. Notably, we found no evidence of damage to the face guard of the helmet, glasses, or eyes, which suggests that the mechanism of the fracture was due to a buckling force rather than a hydraulic force.