Table 2.

Comparison clinical outcomes of two groups.

Parameters	A-PKP	T-PKP	t/χ2	p
VAS (scores)
Preoperative	8.0 ± 0.49	8.0 ± 0.59	0.214	0.831
Postoperative 3 days	2.0 ± 0.48 *	3.0 ± 0.10 *	-7.650	<0.001
Final follow-up	1.92 ± 0.72 *#	3.1 ± 0.62 *	-8.136	<0.001
ODI (%)
Preoperative	77.5 ± 3.39	76.2 ± 3.22	1.728	0.088
Postoperative 3 days	17.9 ± 2.38 *	20.2 ± 3.31 *	-3.552	0.001
Final follow-up	14.8 ± 2.02 *#	17.2 ± 2.55 *#	-4.670	<0.001
Operation time (min)	39.7 ± 4.86	34.5 ± 3.18	5.648	<0.001
Bone cement volume (ml)	5.1 ± 0.42	4.3 ± 0.34	9.908	<0.001
Spongy/Blocky cement pattern (case)	35/4	12/31
Rate of Spongy pattern (%)	89.7	27.9	31.965	<0.001
Bone cement distribution (score)	10.0 ± 1.17	7.74 ± 1.08	10.016	<0.001
Bone cement leakage (%)	20.5	27.9	0.606	0.436
Yes (cases)	8	12
No (cases)	31	31
Adjacent vertebra fractures (%)	5.1	18.6	4.972	0.026
Yes (cases)	2	11
No (cases)	37	32
Bone cement displacement (%)	2.5	20.9	4.841	0.028
Yes (cases)	1	9
No (cases)	38	34

^*Compared to pre-operative, p<0.05.

^#Compared to postoperative 3 days, p<0.05.