Table 2.

Comparison of clinical outcomes between the two groups

Parameters	Blocky group	Spongy group	t/χ2	P
Follow-up time(months)	37.6 ± 6.59	37.6 ± 6.86	− 0.077	0.939
Amount of bone cement injected(ml)	4.7 ± 1.55	4.0 ± 1.16	3.897	0.000
Operation time (min)	38.9 ± 5.52	38.7 ± 5.05	0.864	0.388
Intraoperative blood loss (ml)	20.8 ± 2.94	20.7 ± 3.39	0.438	0.661
Fluoroscopy times	18.1 ± 2.85	18.1 ± 3.31	− 0.237	0.813
Bone cement leakage(%)	16.67	21.21	0.211	0.646
Yes (cases)	5	7
No (cases)	25	26
VAS
Before surgery	8.2 ± 1.43	7.9 ± 1.72	1.646	0.100
On the first day after surgery	3.1 ± 0.92*	2.4 ± 0.66*	5.401	0.000
At the first year after surgery	3.5 ± 0.88*	2.6 ± 0.82*	6.508	0.000
At the last follow-up	3.6 ± 0.88*	2.8 ± 0.80*	7.031	0.000
ODI
Before surgery	72.6 ± 10.89	70.5 ± 10.03	5.293	0.162
On the first day after surgery	29.4 ± 5.42*	24.4 ± 5.13*	24.533	0.000
At the first year after surgery	29.8 ± 5.39*	24.9 ± 5.01*	25.407	0.000
At the last follow-up	29.9 ± 5.41*	25.0 ± 5.56*	22.872	0.000
Adjacent vertebral fractures(%)	16.67	9.09	0.814	0.367
Yes (cases)	5	3
No (cases)	25	30
Correction degree of vertebral compression
On the first day after operation	25.7 ± 4.28	20.4 ± 4.70	21.962	0.000
At the first year after operation	22.8 ± 4.92#	19.6 ± 3.63	13.281	0.000
At the last follow-up	21.5 ± 4.29&@	18.9 ± 3.47#	11.952	0.000
Correction degree of kyphosis
On the first day after operation	26.3 ± 5.34	21.6 ± 5.69	22.467	0.000
At the first year after operation	23.4 ± 5.24#	20.1 ± 5.26#	17.093	0.000
At the last follow-up	21.5 ± 5.17&@	19.3 ± 5.19&	14.509	0.001

*Compared to before surgery, P = 0.000

^#Compared to the first day after operation, P < 0.05

^&Compared to the first day after operation, P = 0.000

^@Compared to the first year after operation, P < 0.05