Table 2:

Comparison of complications between the perforation and PVP groups^a

Complication	Perforation Group	PVP Group	P Value
New fracture after surgery (%)	1/27 (3.7)	10/42 (23.8)	.042
	(median, 10.1 mo)	(follow-up, 10.0 mo)
		16/42 (38.1)
		(median, 15.0 mo)
Progression of vertebral collapse after surgery (%)	6/27 (22.2)	8/50 (16.0)	.380
Pulmonary embolism	0	0
Infection	0	0
Pneumothorax	0	0

^aStatistical analysis was performed by the Fisher exact test.