Closed reduction by robot with different modes: Experimental study on tibial fracture specimen.

ABSTRACT

PURPOSE: This paper evaluates the accuracy and safety of a long bone fracture reduction robot under different surgical modes. METHODS: A long bone fracture reduction robot system was developed, which can be controlled via an autonomous surgical mode or a master-slave surgical mode. Reduction experiments were conducted on a long bone cadaver specimen. The accuracy and safety of the robotic reduction were compared across the different surgical modes. RESULTS: When the fracture reduction was completed by the robot, the translational deviation was less than 2 mm, and the angular deviation was less than 3° The autonomous reduction time was 140 s, while the master-slave reduction time was 200 s. CONCLUSIONS: Based on CT imaging verification, the accuracy of the robot in both autonomous and master-slave surgical modes meets clinical requirements. Future work will focus on further optimizing the robot system.