Passaglia Igor R G, Bastos Endrigo O, Moura Lucas B, Secanho Murilo S, Alonso Nivaldo
From the Faculty of Medicine, University of São Paulo, São Paulo, Brazil.
Plast Reconstr Surg Glob Open. 2024 Dec 20;12(12):e6409. doi: 10.1097/GOX.0000000000006409. eCollection 2024 Dec.
Three-dimensional (3D) models generated from computed tomography (CT) images efficiently and accurately complement surgical comprehension. Additionally, computer modeling provides a substrate for comparative analysis of the treated orbit volume. This study aimed to investigate cases of orbital bone fractures with regard to orbital-defect correction, through 3D computational structural modeling and evaluation of orbital volume.
A total of 136 cases of orbital fractures with a diagnosis and surgical treatment were identified, of which 15 were selected based on inclusion and exclusion criteria. The construction of the preoperative and postoperative 3D models was based on CT images, supported by a medical imaging design system; this technique enabled the calculation of orbital volumetric measurements with the normal contralateral orbit as a reference.
Three-dimensional modeling in the preoperative and postoperative periods was performed for each patient. This study revealed that (1) preoperatively, the affected side had greater volume followed by postoperative reduction and (2) after surgical correction, the affected side had smaller volume and was equivalent to the unaffected side. However, there were no statistically significant differences between the periods (preoperative and postoperative) with regard to the mean and distribution of orbital volume or between the mean orbital volumes of the 2 sides.
Using 3D computer modeling of bone structures, it is possible to evaluate orbital bone fractures after surgical correction. The effectiveness of preoperative and postoperative treatments was confirmed by comparing orbital volumetrics. It was not possible to assess soft tissues due to postoperative edema.
从计算机断层扫描（CT）图像生成的三维（3D）模型能有效且准确地辅助手术理解。此外，计算机建模为已治疗眼眶体积的对比分析提供了基础。本研究旨在通过3D计算结构建模和眼眶体积评估，调查眼眶骨折病例的眼眶缺损矫正情况。
共识别出136例经诊断和手术治疗的眼眶骨折病例，其中15例根据纳入和排除标准被选中。术前和术后3D模型的构建基于CT图像，并由医学影像设计系统提供支持；该技术能够以对侧正常眼眶为参考计算眼眶体积测量值。
对每位患者进行了术前和术后的三维建模。本研究表明：（1）术前，患侧眼眶体积较大，术后减小；（2）手术矫正后，患侧眼眶体积较小，且与未受影响侧相当。然而，在眼眶体积的平均值和分布方面，术前和术后阶段之间以及两侧眼眶平均体积之间均无统计学显著差异。
使用骨结构的3D计算机建模，可以评估手术矫正后的眼眶骨折。通过比较眼眶容积，证实了术前和术后治疗的有效性。由于术后水肿，无法评估软组织情况。
