Digital Technologies in the Surgical Treatment of Post-Traumatic Zygomatico-Orbital Deformities.

Unlabelled: was to determine the efficacy of using digital technologies in patients with post-traumatic deformities of the zygomatico-orbital complex (ZOC) by comparing the results with the conventional methods of surgical treatment.

Materials And Methods: The article summarizes treatment results of 231 patients with ZOC injuries who underwent surgery at the clinical facilities of Privolzhsky Research Medical University (Nizhny Novgorod) in 2011-2019. There were treated 44.2% (102/231) of patients with post-traumatic deformities of ZOC, including 38.2% (39/102) with post-traumatic defects and deformities of the orbital floor.Based on clinical and radiological planning of surgical operations, the patients were divided into two groups: group 1 included patients who underwent surgery without preoperative virtual planning (54.9% (56/102) of cases), group 2 included patients who underwent virtually planned surgical interventions (45.1% (46/102) of cases). There were 22 and 17 patients with orbital deformities in groups 1 and 2, respectively.

Results: The optimal restoration of ZOC anatomy was observed in 75% (42/56) of patients in group 1 and 93.5% (43/46) of patients in group 2. During reconstruction of the orbital floor in patients of group 1, successful results were achieved in 68.2% (15/22) of cases and 88.2% (15/17) in group 2, various complications were observed in the rest of cases.Based on the analysis of surgical treatment results, there was developed a personalized approach to manufacturing of zygomatic bone and orbital floor implants using computer modeling and 3D printing technologies.

Conclusion: In contrast to the conventional methods, the use of digital technologies in the surgical treatment of post-traumatic deformities of ZOC allows avoiding the problematic issues of implant positioning and the development of complications during reconstruction, significantly reducing surgical injury and improving patient rehabilitation.