Short-Segment Instrumentation with Fractured Vertebrae Augmentation by Screws and Bone Substitute for Thoracolumbar Unstable Burst Fractures

Table 2

Patient demographic data.

Characteristic	Study	Control	values
	(N = 20)	(N = 22)
Age (years)	41.6 ± 12.7	42.9 ± 10.6	0.811
Gender
Female	7	9	0.615
Male	13	13
Level
T11	0	0	0.648
T12	4	7
L1	12	12
L2	4	3
Hospital stay (days)	12.1 ± 5.7	11.0 ± 6.1	0.253
Injury to operation interval (days)	4.2 ± 2.2	4.4 ± 4.2	0.415
Operation time (min)	146.8 ± 52.0	157.5 ± 21.3	0.118
Blood loss (c.c.)	136.0 ± 90.5	363.6 ± 306.7	0.001
Mechanism
Fall	18	16	0.257
MVA	2	6
Associated injury
Yes	8	5	0.191
No	12	17

MVA = motor vehicle accident.