KMID : 0390220030140010100
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Journal of Clinical Otolaryngology, Head and Neck Surgery 2003 Volume.14 No. 1 p.100 ~ p.104
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A Correlation between the Volume of Herniated Orbital Tissues and the Degree of Enophthalmos : Analysis of 86 Isolated Blowout Fracture Cases of the Medial Orbital Wall
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Kim Young-Ho
Park Seong-Won Moon Jung-Hwan Kwon Jae-Hwan Cho Joong-Hwan
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Abstract
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Background and Objectives£ºBlowout fractures of the medial orbital wall with persistent diplopia, eyeball movement disorders and enophthalmos require a surgical treatment. Nevertheless, it is often difficult to measure the degree of enophthalmos due to periorbital edema in the early post-traumatic period. It would be quite useful if we could forecast the extent of enophthalmos in accordance with the volume of herniated orbital tissues observed in the computerized tomography images. Accordingly, this study investigated for any correlation between the volume of herniated orbital tissues and the extent of enophthalmos in the isolated blowout fractures of the medial orbital wall. Materials and
Methods£º86 cases with an isolated blowout fracture of the medial orbital wall, which were confirmed by computerized tomography scans, were evaluated. The volumes of herniated orbital tissues were determined by the computerized tomography images using the simple linear measurement technique. The degree of enophthalmos was measured by exophthalmometry. Each calculated volume of the herniated orbital tissues was compared with the degree of enophthalmos in order to determine whether there was any significant correlation between them.
Results£ºThe extent of enophthalmos was proportional to the volume of herniated orbital tissues (p<0.05). The volume of herniated orbital tissue associated with 2 mm of enophthalmos as calculated by the regression curve was 1.15 ml.
Conclusion£ºEnophthalmos of 2 mm or more, which is a frequent indication for surgery, could be expected if the volume of herniated orbital tissue were 1.15 ml or more.
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KEYWORD
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Blowout fracture, Medial orbital wall, Enophthalmos, Volume of herniated orbital tissue
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