Error Analysis of Robot-Assisted Orthognathic Surgery. Issue 8 (November 2020)

• Record Type: Journal Article
• Authors: Wu, Jinyang; Hui, Wenyu; Chen, Shihang; Niu, Jindong; Lin, Yanping; Luan, Nan; Zhang, Shilei; Shen, Steve G.F.
• Is Part Of: Journal of craniofacial surgery. Volume 31:Issue 8(2020)
• Publication Date: 2020-11
• Subjects: Genioplasty -- Le Fort I osteotomy -- navigation -- orthognathic surgery -- robot; Facial bones -- Surgery -- Periodicals; Skull -- Surgery -- Periodicals; Face -- Surgery -- Periodicals; Surgery, Plastic -- Periodicals; 617.52
• DOI: 10.1097/SCS.0000000000006767
• Languages: English
• ISSNs: 1049-2275

Abstract

Abstract : Objective: Orthognathic surgery is an effective method to correct the dentomaxillofacial deformities. The aim of the study is to introduce the robot-assisted orthognathic surgery and demonstrate the accuracy and feasibility of robot-assisted osteotomy in transferring the preoperative virtual surgical planning (VSP) into the intraoperative phase. Methods: The CMF robot system, a craniomaxillofacial surgical robot system was developed, consisted of a robotic arm with 6 degrees of freedom, a self-developed end-effector, and an optical localizer. The individualized end-effector was installed with reciprocating saw so that it could perform osteotomy. The study included control and experimental groups. In control group, under the guidance of navigation system, surgeon performed the osteotomies on 3 skull models. In experimental group, according to the preoperative VSP, the robot completed the osteotomies on 3 skull models automatically with assistance of navigation. Statistical analysis was carried out to evaluate the accuracy and feasibility of robot-assisted orthognathic surgery and compare the errors between robot-assisted automatic osteotomy and navigation-assisted manual osteotomy. Results: All the osteotomies were successfully completed. The overall osteotomy error was 1.07 ± 0.19 mm in the control group, and 1.12 ± 0.20 mm in the experimental group. No significant difference in osteotomy errors was found in the robot-assisted osteotomy groups ( P = 0.353). There was consistence of errors between robot-assisted automatic osteotomy and navigation-assisted manual osteotomy. Conclusion: In robot-assisted orthognathic surgery, the robot can complete an osteotomy according to the preoperative VSP and transfer a preoperative VSP into the actual surgical operation with good accuracy and feasibility. Abstract : Supplemental Digital Content is available in the text