From: The positional consistency between guidewire and cannulated or solid screw in robot-assisted spinal internal fixation surgery
Consistency scale
Cannulated screw group
%
Solid screw group
p*
Grade A
175
85.0
81
69.8
 < 0.01
Grade B
29
14.1
22
19.0
Grade C
2
1.0
13
11.2