TY - JOUR
T1 - Role of medial orbital wall morphologic properties orbital blow-out fractures
AU - Song, Won Kyung
AU - Lew, Helen
AU - Yoon, Jin Sook
AU - Oh, Min Jin
AU - Lee, Sang Yeul
N1 - Copyright:
Copyright 2010 Elsevier B.V., All rights reserved.
PY - 2009/2
Y1 - 2009/2
N2 - PURPOSE. This study compares medial orbital wall supporting structures in patients with isolated inferior and medial wall fractures. METHODS. The morphologic properties in all consecutive patients with periocular trauma who underwent orbital computed tomography (CT) scans from January 2004 to March 2006 were reviewed. On CT scans, the size of the fracture, the number of ethmoid air cell septa, and the length and height of the lamina papyracea were measured. RESULTS. In 118 patients without orbital wall fracture, there were no bilateral differences in the measured structures. We took measurements from the opposite site in patients with fractures in whom it was difficult to visualize the structures at the fractured site. Seventy patients with medial wall fractures and 37 with inferior wall fractures showed no differences in sex, side of impact, etiology of the trauma, association with intraocular injuries, fracture size, anterior and posterior height, anteroposterior length, or the area of the lamina papyracea. In contrast, the number of ethmoid air cell septa was significantly lower (3.09 ± 0.86 vs. 3.62 ± 0.79, P = 0.002) and the lamina papyracea area supported per ethmoid air cell septum was significantly higher (137.55 ± 40.11 mm2 vs. 119.64 ± 38.14 mm2, P = 0.028) in patients with medial wall fractures than in those with inferior wall fractures. CONCLUSIONS. Patients with fewer ethmoid air cell septa and a larger lamina papyracea area per septum are more likely to develop medial wall fractures than inferior wall fractures.
AB - PURPOSE. This study compares medial orbital wall supporting structures in patients with isolated inferior and medial wall fractures. METHODS. The morphologic properties in all consecutive patients with periocular trauma who underwent orbital computed tomography (CT) scans from January 2004 to March 2006 were reviewed. On CT scans, the size of the fracture, the number of ethmoid air cell septa, and the length and height of the lamina papyracea were measured. RESULTS. In 118 patients without orbital wall fracture, there were no bilateral differences in the measured structures. We took measurements from the opposite site in patients with fractures in whom it was difficult to visualize the structures at the fractured site. Seventy patients with medial wall fractures and 37 with inferior wall fractures showed no differences in sex, side of impact, etiology of the trauma, association with intraocular injuries, fracture size, anterior and posterior height, anteroposterior length, or the area of the lamina papyracea. In contrast, the number of ethmoid air cell septa was significantly lower (3.09 ± 0.86 vs. 3.62 ± 0.79, P = 0.002) and the lamina papyracea area supported per ethmoid air cell septum was significantly higher (137.55 ± 40.11 mm2 vs. 119.64 ± 38.14 mm2, P = 0.028) in patients with medial wall fractures than in those with inferior wall fractures. CONCLUSIONS. Patients with fewer ethmoid air cell septa and a larger lamina papyracea area per septum are more likely to develop medial wall fractures than inferior wall fractures.
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U2 - 10.1167/iovs.08-2204
DO - 10.1167/iovs.08-2204
M3 - Article
C2 - 18824729
AN - SCOPUS:59449097630
VL - 50
SP - 495
EP - 499
JO - Investigative Ophthalmology and Visual Science
JF - Investigative Ophthalmology and Visual Science
SN - 0146-0404
IS - 2
ER -