Precise screw placement of 3D printing model and orthopedic robot in spinal deformity

doi:10.12307/2022.174

Abstract

Abstract: BACKGROUND: Spinal deformities lead to changes in the normal anatomical structure of the pedicle, and it is more difficult to insert pedicle screws during the correction of spinal deformities.
OBJECTIVE: To investigate the accuracy of screw placement and single screw placement time in orthopedic surgery with 3D printing model and orthopedic robot.
METHODS: Totally 40 patients with spinal deformity were divided into two groups according to different surgical approaches. In the observation group, 18 patients were placed with pedicle screw assisted by orthopedic robot; i.e., in the process of open surgery, the robot was used to plan the pedicle screw paths; the manipulator reached the designated position; the guide needle and screw were placed. In the control group, 22 cases were implanted with pedicle screw assisted by 3D model. According to Gertzbein-Robbins classification standard, the accuracy of screw placement was evaluated. The time of single screw placement was recorded, and the accuracy and time of single screw placement were compared between the two groups. The protocol was performed in accordance with Declaration of Helsinki and the relevant ethical requirements of the Gansu Provincial Hospital.
RESULTS AND CONCLUSION: (1) There was no significant difference in the accuracy of screw placement between the two groups (P > 0.05). The accuracy of class A screw was significantly higher in the observation group 85.9%(256/298) than that in the control group 79.9%(283/354) (P < 0.05). The accuracies of class B, class C and class D screw were not significantly different between the two groups (P > 0.05). (2) The time of single screw placement was not significantly different between the observation group and the control group [(4.01±0.61), (3.74±0.44), P > 0.05]. (3) It is concluded that orthopedic robot assisted pedicle screw placement can significantly improve the accuracy of class A screw placement, which is highly accurate, effective and feasible.

Key words: spinal deformity, orthopedic robot, 3D printing technology, accuracy of pedicle screw placement

CLC Number:

Song Yuxin, Zhang Tongtong, Niu Jianxiong, Wang Zengping, Wen Jie, Zhang Qunli, Xue Wen, Liu Lin. Precise screw placement of 3D printing model and orthopedic robot in spinal deformity[J]. Chinese Journal of Tissue Engineering Research, 2022, 26(6): 904-907.

Figures/Tables 5

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