Table 4. Surgical outcomes and accuracy of screws placement.

*P-value is significant.

iCT-Nav: intraoperative CT-guided navigation; FS: conventional fluoroscopy; VAS: visual analog scale; SF-12 PCS: short 12 physical component scores; Preop: preoperative; M: month

		ICT-Nav group (N=15)	FS group (N=42)	p-Value
Mean (SD) hospital length of stay (days)		7.45(±2.5)	9.31(±2.05)	0.033*
VAS	Preop	7.34 (±1.27)	6.48(±0.82)	0.245
	3-M	2.10(±0.78)	3.78(±1.98)	0.043*
	2-year	0.65(±0.6)	2.36(±1.78)	0.024*
SF-12 PCS	Preop	27.16(±8.43)	26.67(±11.60)	0.349
	3-M	34.71(±10.50)	29.45(±14.40)	036*
	2-year	44.37(±8.74)	38.78(±12.87)	0.015*
No. of inserted pedicle screws		98	252
L1		12	6
L2		20	10
L3		18	36
L4		24	91
L5		24	109
No. of breached pedicles >2 mm (grades C and D)		0	33	0.0001*