Effects of Combined Use of Ultrasonic Bone Scalpel and Hemostatic Matrix on Perioperative Blood Loss and Surgical Duration in Degenerative Thoracolumbar Spine Surgery

Table 1

Demographics.

	Group A	Group B	Group C	P value
Gender (M/F)	42/54	24/72	31/70	0.018
Case number (No.)	96	96	101	0.918
Age (year)	65.3±7.1	68.7±6.3	65.2±6.5	0.179
OP level
Short segment (No.)	62	54	53	0.215
Long segment (No.)	34	42	48	0.212
Mean surgical levels	3.2±0.6	3.5±0.7	3.4±0.6	0.962
(No.)
OP assists
FloSeal	-	+	+
Bone Scalpel	-	-	+
Mean number of used FloSeal (pack)	0	1.0±0.2	1.3±0.4

Short segment was defined as decompression and instrumentation ≦ 3 levels and long segment was defined as decompression and instrumentation ≧ 4 levels.