Predictors of accurate intrapedicular screw placement in single-level lumbar (L4-5) fusion: robot-assisted pedicle screw, traditional pedicle screw, and cortical bone trajectory screw insertion

Table 5 Pairwise analysis of the rates of the optimal screw, the clinically acceptable screw and the rates of FJV

	Group	^χ2	P*
Pairwise analysis of the rates of the optimal screw	RA and PS	3.118	0.077
	RA and CBT	8.395	0.004
	PS and CBT	1.521	0.217
Pairwise analysis of the rates of the clinically acceptable screw	RA and PS	0.251	0.616
	RA and CBT	4.815	0.028
	PS and CBT	3.243	0.072
Pairwise analysis of the rates of facet violation	RA and PS	6.967	0.008
	RA and CBT	1.234	0.267
	PS and CBT	13.445	< 0.001

RA robot-assisted, PS pedicle screw, CBT cortical bone trajectory, FJV facet joint violation
^*P < 0.017 indicates that statistical differences were observed between the two groups

ISSN: 1471-2482