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Table 3 Classification of superior facet joint violation

From: Accuracy and safety of robot-assisted cortical bone trajectory screw placement: a comparison of robot-assisted technique with fluoroscopy-assisted approach

Grade RG (n = 74) FH (n = 88) P
0 58 56 0.041*
1 12 22 0.171
2 4 10 0.179
  1. *P < 0.05. Statistically significant differences between the two groups