Table 2.

Comparison of surgery time, bleeding volume, number of fluoroscopies, and number of guide needle trajectory adjustments between patients in the guide plate group and the conventional group

Variable	Guide plate group (n = 23)	Conventional group (n = 28)	t/Z	P
Surgery time (min)	46.30 ± 8.14	51.43 ± 8.42	-2.19	0.033
Intraoperative bleeding volume (mL)	14.00 ± 2.68	15.00 ± 2.61	-1.35	0.185
Number of intraoperative fluoroscopies	6.00 (5.50, 8.50)	12.50 (8.75, 16.25)	-3.97	< 0.001
Number of guide needle trajectory adjustments during surgery	1.00 (0.00, 2.00)	4.00 (2.00, 6.00)	-4.10	< 0.001