Experimental study on the application of navigation robot system in precise mandible osteotomy
10.3760/cma.j.issn.1009-4598.2020.02.007
- VernacularTitle:导航机器人系统应用于下颌骨精确截骨的实验研究
- Author:
Binjie LUO
1
;
Meng XIONG
Author Information
1. 江苏省泰州市人民医院烧伤整形科 225300
- Keywords:
Spatial navigation;
Manikin;
Mandible;
Osteotomy
- From:
Chinese Journal of Plastic Surgery
2020;36(2):140-147
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To study the accuracy and stability of mandible osteotomy assisted by navigation robot system.Methods:One 27-year-old female patient with hypertrophic mandible angle was selected from Taizhou People’s Hospital, and five same mandible manikins were made by 3D printing technology, according to the CT scan data of her head. The mandible navigation robot system was built, and the 3D data of the skull was imported into FaceGraph software to form the virtual 3D image, then the osteotomy line was preset according to the "ideal osteotomy line" . The surface features of the manikin was scanned by a 3D laser scanner, and registered with the virtual 3D images. The robot arms transmitted the inter-arm joints angle value to the host computer through signal transmission connections, and the real-time position of the end of the robot arm was calculated, based on the spatial modeling of the robot arms. After the steps above, the coordinates of virtual space, real space and the relative position of the robot arm were unified. With the assistance of navigation system, the operator held the end of the arms and completed 5 cases of osteotomy on mandible manikins. SPSS 20.0 software was used to make descriptive statistics on the total 40 deviation values of the 5 manikins, which were between the actual osteotomy line on the manikins and the preset osteotomy line in the software. One-way ANOVA was performed on the respective deviation values of the five manikins to find out whether there was a difference among deviations of the five manikins.Results:The milling cutter in the end of the robot operated steadily, and could run along the osteotomy line on the mandible manikins preseted before the experiment. The deviation value between the actual osteotomy line and the preset one in the pre-set locations was (0.92±0.43) mm (95%CI: 0.78-1.05 mm); there was no statistic difference of the deviation values comparing the five manikins with one-way ANOVA ( F=0.320, P>0.05). Conclusions:Under the operator’s control, the navigation robot system can perform an osteotomy to the mandible model accurately and stably according to the preset osteotomy line.
