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Table 2 Pedicle screw placement accuracy

From: Comparison of accuracy and safety between second-generation TiRobot-assisted and free-hand thoracolumbar pedicle screw placement

Variable

RA group

FH group

P value

Number of screws

178

172

 

Cortical violation grade

 A

162

130

< 0.001

 B

15

25

 

 A + B

177

155

< 0.001

 C

1

13

 

 D

0

3

 

 E

0

1

 

Screw deviation (mm)

1.46 (0.94, 1.95)

2.48 (1.09, 3.74)

< 0.001

  1. RA robot-assisted, FH free-hand
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