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Straightforward Factors for Predicting the Prognosis of Blow-Out Fractures

Higashino, Takuya MD*; Hirabayashi, Shinichi MD†; Eguchi, Tomoaki MD‡; Kato, Yuki MD†

Journal of Craniofacial Surgery:
doi: 10.1097/SCS.0b013e31821c0d13
Original Articles
Abstract

In blow-out fractures, some nonoperative cases have a poor outcome, and a method for accurate prognosis is required. To address this need, we retrospectively reviewed blow-out fractures presenting at Teikyo University Hospital between July 2004 and May 2007 and conducted a survey regarding diplopia and enophthalmos for nonoperative cases. Computed tomographic scan findings were divided according to fracture width and the degree of protrusion of the inferior rectus muscle into the maxillary sinus. We had 106 patients presenting with blow-out fractures, and 89 patients had been treated nonoperatively. In medial orbital wall fractures, no patient had diplopia, and 1 patient had enophthalmos after nonoperative treatment. In punched-out orbital floor fractures, all cases had diplopia when the fracture width was less than half the diameter of the globe, and the protrusion of the inferior rectus muscle into the maxillary sinus was half or more of its section. Even if the fracture width was less than half the diameter of the globe, 2 of 3 patients had enophthalmos when the protrusion of the inferior rectus muscle into the maxillary sinus was half or more of its section. Among the linear orbital floor fractures, 1 case required an emergency operation. We suggest a new algorithm for treatment of blow-out fractures based on computed tomographic scan findings that can also contribute to making a prognosis.

Author Information

From the *Department of Plastic Surgery, University of Tokyo Graduate School of Medicine; †Department of Plastic, Oral and Maxillofacial Surgery, Teikyo University School of Medicine; and ‡Department of Plastic Surgery, Toranomon Hospital, Tokyo, Japan.

Received August 16, 2010.

Accepted for publication September 25, 2010.

Address correspondence and reprint requests to Takuya Higashino, MD, Department of Plastic Surgery, University of Tokyo Graduate School of Medicine, 7-3-1, Hongo, Bunkyo-Ku, Tokyo 113-8655, Japan; E-mail: higashino-pla@umin.ac.jp

The authors report no conflicts of interest.

© 2011 Mutaz B. Habal, MD