Jin H R, Shin S O, Choo M J, Choi Y S
Department of Otolaryngology, Chungbuk National University, College of Medicine, Cheongju, Korea.
J Oral Maxillofac Surg. 2000 Jun;58(6):617-20; discussion 620-1. doi: 10.1016/s0278-2391(00)90152-6.
This study investigated the relationship between the extent of fracture and enophthalmos in blowout fractures of the medial orbital wall.
Nine patients with isolated blowout fractures of the medial orbital wall, confirmed by computed tomography scans, were evaluated. The area of fracture and the volume of herniated orbital tissue were determined from computed tomography scans using simple linear measurements. Each of the calculated values for area and volume were compared with the degree of enophthalmos to determine whether there was any significant relationship between them.
Enophthalmos increased proportionally as the area of fracture or the volume of herniated orbital tissue increased (P < .05). The area of fracture and the volume of herniated orbital tissue associated with 2 mm of enophthalmos were 1.9 cm2 and 0.9 mL, respectively, as calculated from the regression curve.
Enophthalmos of 2 mm or more, which is a frequent indication for surgery, can be expected when the area of fracture is 1.9 cm2 or more, or the volume of herniated orbital tissue is 0.9 mL or more.
本研究调查眼眶内侧壁爆裂性骨折的骨折范围与眼球内陷之间的关系。
对9例经计算机断层扫描确诊为单纯眼眶内侧壁爆裂性骨折的患者进行评估。通过简单的线性测量，从计算机断层扫描中确定骨折面积和眶内组织疝出体积。将计算得出的面积和体积值分别与眼球内陷程度进行比较，以确定它们之间是否存在显著关系。
随着骨折面积或眶内组织疝出体积的增加，眼球内陷程度呈比例增加（P <.05）。根据回归曲线计算，与2mm眼球内陷相关的骨折面积和眶内组织疝出体积分别为1.9cm²和0.9mL。
当骨折面积为1.9cm²或更大，或眶内组织疝出体积为0.9mL或更大时，预计会出现2mm或更严重的眼球内陷，这是手术的常见指征。
