Improved Monosegment Pedicle Instrumentation for Treatment of Thoracolumbar Incomplete Burst Fractures

Table 2

Main results in the two groups.

	iMSPI group	SSPI group	P value
Bleeding (mL)	213 ± 103	324 ± 192	0.006
Operation time (mins)	159 ± 37	174 ± 41	0.135
Drainage (mL)	78 ± 52	142 ± 68	0.008
Posterolateral fusion
Fusion	27 (90.0%)	30 (90.9%)
Doubtful fusion	3 (10.0%)	3 (9.1%)
Nonunion	0 (0.0%)	0 (0.0%)
SI (°)
Preoperative	15.3 ± 6.0	18.7 ± 8.4	0.068
One week postoperatively	6.3 ± 4.1	6.7 ± 5.0	0.676
Last followup	8.2 ± 4.2	7.6 ± 4.5	0.632
ABHC (%)
Preoperative	33.9 ± 11.2	37.8 ± 14.9	0.242
One week postoperatively	8.1 ± 6.0	2.5 ± 4.2	0.000
Last followup	9.7 ± 6.2	7.0 ± 5.5	0.072
Visual analogue scale (VAS)
One week postoperatively	3.6 ± 0.9	3.8 ± 0.8	0.680
Last followup	0.5 ± 0.8	0.6 ± 0.8	0.824
Follow-up time (months)	48.2 ± 15.9	52.8 ± 24.7	0.386

Chi-square test.