Table 2. Reasons for surgical posterior fusion.

Reasons	Without navigation		With navigation		Total		p
	n	%	n	%	n	%
Fracture, fall from a height	128	51	90	44.3	218	48	0.17
Fracture, traffic accident	53	21.1	53	26.1	106	23.3	0.21
Tumor	47	18.7	40	19.7	87	19.2	0.79
Other	23	9.2	20	9.9	43	9.5	0.80
Total	251	100	203	100	454	100