We report 2 patients with blow-in fractures of the orbital floor caused by different mechanisms. In a 17-year-old boy, a sudden impact was given to the anterior maxillary wall and caused a depression fracture of a maxilla, yet the infraorbital rim remained intact. We think fragments of the orbital floor were forced into the orbit by a sudden increase in pressure in the maxillary sinus in this patient. In a 51-year-old man, the impact of a force was on the laterosuperior part of the zygoma, which pushed the zygoma medially. These 2 cases represent 2 different mechanisms of blow-in fractures of the orbital floor.
From the *Department of Plastic Surgery and the Center for Advanced Medical Education by the BK21 Project; and Departments of †Plastic Surgery and ‡Anesthesia, Inha University School of Medicine, Incheon, Korea.
Received January 3, 2013.
Accepted for publication March 2, 2013.
Address correspondence and reprint requests to Dr. Kun Hwang, Department of Plastic Surgery and the Center for Advanced Medical Education by the BK21 project, Inha University School of Medicine, 7-206 Sinheung-dong, Jung-gu, Incheon, 400-711, Korea; E-mail: firstname.lastname@example.org
This work was supported by a grant from Inha University (Inha Research Grant).
The authors report no conflicts of interest.