Study on the Relationship between the Use of Bisphosphonates for Antiosteoporosis and Vertebral Re-Fracture after Vertebroplasty

Table 3

Comparison of surgical factors between the refracture group and the nonrefracture group.

Factors		Refracture group (n = 29)	Nonrefracture group (n = 121)	t/χ ^2
Bone cement injection volume (mL)		6.02 ± 2.13	5.52 ± 2.76	0.912	0.363
Bone cement leakage	Yes	10 (34.48)	21 (18.36)	4.088	0.043
	No	19 (65.52)	99 (81.82)
Bone cement	Bad	18 (62.07)	36 (29.75)	10.604	0.001
	Good	11 (37.93)	85 (70.25)
Surgical method	PVP	18 (62.07)	68 (56.20)	0.330	0.566
	PKP	11 (37.92)	53 (43.80)
Puncture mode	Unilateral	23 (79.31)	98 (80.99)	0.042	0.837
	Bilateral	6 (20.39)	23 (19.01)