Fig. 7. Surgical view of Patient #3. A. ORIF of the midfacial fractures, frontal bone fracture, and left zygomaticomaxillary complex fracture were treated by ORIF with a bi-coronal incision. B. The zygomaticomaxillary buttress and the nasomaxillary buttress were treated by ORIF through an oral vestibular incision. C. The infraorbital rim was treated by ORIF through a sub-tarsal incision. D. The bone used for orbital floor reconstruction was harvested from the parietal exostosis. E. Workflow based on intra-operative CT to update the navigation system and navigation-assisted ETOND and intra-operative CT imaging using mobile-type cone-beam CT (3D Accuitomo M, Morita). F. Registration of the navigation system (Stealth Station ENT) using intraoperatively acquired CT data. G. Screen view during registration to the navigation system. H. Navigation-assisted ETOND by an endoscopic rhinologist. I. During the navigation-assisted ETOND performed by the endoscopic rhinologist, the posterior wall of the posterior ethmoid sinus was removed to gain access to the sphenoid sinuses (black arrows). J. Optic prominence (white arrow) with a view of the sphenoid sinus. (ORIF: open reduction and internal fixation, CT: computed tomography, ETOND: endoscopic trans-nasal optic nerve decompression)

J Korean Assoc Oral Maxillofac Surg 2024;50:273~284
https://doi.org/10.5125/jkaoms.2024.50.5.273

© JKAOMS