Table 2.

Comparative analysis of screw placement accuracy in 2 groups

group	Screw parallelism (deg.)		Screw area ratio	DS (mm)	DC (mm)	DSC (mm)
	AP	Lateral
conventional	1.73 ± 0.62	1.52 ± 0.60	0.16 ± 0.02	10.38 ± 3.91	8.02 ± 1.51	4.21 ± 1.31
GFNS	1.68 ± 0.83#	1.61 ± 0.57#	0.29 ± 0.02*	16.87 ± 4.12*	11.05 ± 1.94*	2.40 ± 1.24*

GFNS guide of femoral neck section, DS distance between screws, DC distance between the centre of FNS, DSC distance between screw to femoral neck cortex

*P < 0.05; #p > 0.05 Comparing with Conventional group