title: Straightforward factors for predicting the prognosis of blow-out fractures.
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.
authors.affiliation: Department of Plastic Surgery, University of Tokyo Graduate School of Medicine, Tokyo, Japan. higashino-pla@umin.ac.jp
authors.forename: Takuya
authors.initials: T
authors.lastname: Higashino
authors.forename: Shinichi
authors.initials: S
authors.lastname: Hirabayashi
authors.forename: Tomoaki
authors.initials: T
authors.lastname: Eguchi
authors.forename: Yuki
authors.initials: Y
authors.lastname: Kato
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000465:Algorithms; D001265:Athletic Injuries / Q000628:therapy; D002648:Child; D004172:Diplopia / Q000150:complications; D015841:Enophthalmos / Q000150:complications; D005260:Female; D005500:Follow-Up Studies; D005544:Forecasting; D006801:Humans; D008297:Male; D008443:Maxillary Sinus / Q000000981:diagnostic imaging; D008875:Middle Aged; D009801:Oculomotor Muscles / Q000000981:diagnostic imaging; D009917:Orbital Fractures / Q000145:classification / Q000150:complications / Q000628:therapy*; D010347:Patient Care Planning; D011379:Prognosis; D011391:Prolapse; D020127:Recovery of Function / Q000502:physiology; D012189:Retrospective Studies; D014057:Tomography, X-Ray Computed; D016896:Treatment Outcome; D014754:Violence; D055815:Young Adult