Application of digital technology in the treatment of secondary deformity of orbitozygomatic fracture
10.3760/cma.j.cn114453-20200228-00086
- VernacularTitle:数字化技术在陈旧性眶颧骨折修复中的应用
- Author:
Hengxin LIU
1
;
Bo XIAO
;
Xianjun FU
;
Juan ZHANG
;
Xianhui ZENG
;
Xi ZHANG
Author Information
1. 空军军医大学第一附属医院整形外科，西安 710032
- Keywords:
Orbital fractures;
Zygomatic fractures;
Computer-aided design;
Printing, three-dimensional;
Osteotomy;
Fracture fixation;
Guide plate
- From:
Chinese Journal of Plastic Surgery
2021;37(1):59-65
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To investigate the clinical effect of digital technology in the treatment of secondary deformity of orbitozygomatic fracture.Methods:The clinical data of 20 patients with secondary deformity of orbitozygomatic fracture treated in the Department of Plastic Surgery, the First Affiliated Hospital of Air Force Medical University from October 2015 to May 2019 were retrospectively analyzed, including 14 males and 6 females, aged 18-56 years. A computed tomography scan of the skull was performed before the operation. The data was three-dimensional(3D) reconstructed by Mimics software. The digital model was used to determine the surgical plan. Then the 3D head model was printed, osteotomy guide plate and reduction guide plate were used to guide osteotomy and reduction during surgery. Using Mimics software, the angle between orbital horizontal level and bilateral tragus linkage(A-OT value), the absolute value of the distance difference between bilateral zygomatic process point and facial midline (face width difference), and the absolute value of the distance difference between bilateral zygomatic process points and the vertical line passing through the central point of bony external auditory canal(facial process difference) were measured before and 3 days after operation. The exophthalmos of the affected side was measured by Hertel exophthalmos meter before and 6 months after operation. The paired t-test was used for comparison before and after operation. P<0.05 was statistically significant. Results:All the wounds healed well and the 20 patients were followed up for 6 months to 3 years. Before and after surgery, the A-OT values were (8.41 ± 2.46)° and (2.67 ± 0.55)°, with statistically significant difference ( t=11.242, P<0.001). Face width differences were (9.12 ± 1.02) mm and (1.51 ± 0.40) mm, with statistically significant difference( t=33.946, P<0.001). Facial process differences were (9.22 ± 0.95) mm and (1.53 ± 0.61) mm, with statistically significant difference ( t=33.484, P<0.001). Except for 4 patients with enucleation, the exophthalmos of the other patients was (7.81 ± 1.25) mm before operation and (12.78 ± 0.65) mm 6 months after operation. The difference was statistically significant ( t=-13.183, P<0.001). There was no diplopia and abnormal eye movement after operation. Conclusions:The application of digital technology in the treatment of secondary deformity of orbitozygomatic fracture is helpful to accurately diagnosis and reduction, and to improve the surgical effect.
