Jiangang Shi1, Yang Hou1, Yanping Lin2, Huajiang Chen1, Wen Yuan3. 1. Department of Orthopaedic Surgery, Changzheng Hospital, Second Military Medical University, Shanghai, China. 2. School of Mechanical Engineering, State Key Laboratory of Mechanical System and Vibration, Institute of Biomedical Manufacturing and Life Quality Engineering, Shanghai, China. 3. Department of Orthopaedic Surgery, Changzheng Hospital, Second Military Medical University, Shanghai, China. Electronic address: Alexzandersuper@163.com.
Abstract
OBJECTIVE: We sought to assess the validity of a virtual surgical training system on lumbar pedicle screw placement for residents. METHODS:Ten inexperienced residents were randomly assigned to the simulation training (ST) group (n = 5) and control group (n = 5). The ST group performed the lumbar pedicle screw placement on the virtual surgical training system, and the control group was given an introductory teaching session before the cadaver test. A total of 8 adult fresh cadavers including 5 males and 3 females were collected and randomly allocated to the 2 groups. Each group performed the bilateral L1-L5 pedicle screw instrumentation in the cadaver specimens, respectively. Accuracy was assessed by computed tomography after instrumentation. The screw penetration rates, acceptable rates, and average screw penetration distance of the 2 groups were compared using statistical analysis. RESULTS: The screw penetration rate of the ST group (12.5%) was significantly lower than the control group (37.5%, P < 0.05). The screw acceptable rates in ST and control groups were 100% and 85%, respectively, with statistical differences between each other (P < 0.05). There was also a statistically significant difference of the average screw penetration distance between the ST (1.37 ± 0.62 mm) group and control group (2.42 ± 0.51 mm, P < 0.05). CONCLUSIONS: The virtual surgery simulation with greater accuracy is superior to the traditional teaching methods in surgical training of pedicle screw placement and can be used as a promising alternative for training of neurosurgical procedures.
RCT Entities:
OBJECTIVE: We sought to assess the validity of a virtual surgical training system on lumbar pedicle screw placement for residents. METHODS: Ten inexperienced residents were randomly assigned to the simulation training (ST) group (n = 5) and control group (n = 5). The ST group performed the lumbar pedicle screw placement on the virtual surgical training system, and the control group was given an introductory teaching session before the cadaver test. A total of 8 adult fresh cadavers including 5 males and 3 females were collected and randomly allocated to the 2 groups. Each group performed the bilateral L1-L5 pedicle screw instrumentation in the cadaver specimens, respectively. Accuracy was assessed by computed tomography after instrumentation. The screw penetration rates, acceptable rates, and average screw penetration distance of the 2 groups were compared using statistical analysis. RESULTS: The screw penetration rate of the ST group (12.5%) was significantly lower than the control group (37.5%, P < 0.05). The screw acceptable rates in ST and control groups were 100% and 85%, respectively, with statistical differences between each other (P < 0.05). There was also a statistically significant difference of the average screw penetration distance between the ST (1.37 ± 0.62 mm) group and control group (2.42 ± 0.51 mm, P < 0.05). CONCLUSIONS: The virtual surgery simulation with greater accuracy is superior to the traditional teaching methods in surgical training of pedicle screw placement and can be used as a promising alternative for training of neurosurgical procedures.
Authors: T Chen; Y Zhang; C Ding; K Ting; S Yoon; H Sahak; A Hope; S McLachlin; E Crawford; M Hardisty; J Larouche; J Finkelstein Journal: N Am Spine Soc J Date: 2021-04-14