Table 3 Comparative results of the invasion of adjacent facet joints.

From: Comparison of the efficacies of TINAVI robot-assisted surgery and conventional open surgery for Levine–Edward type IIA (postreduction) hangman fractures

Indicators

Robot group

Traditional surgery group

t/Z/χ2

P

Invasion of the adjacent facet joint

 Level 0

48

42

3.89

 < 0.001

 Level 1

2

28

  

 Level 2

0

0

  
  1. Analysed by chi-square test, P < 0.05.
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