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

Table 2

Mean intraop blood loss, mean surgical times, and complications in each group.

	Group 1	Group 2	Group 3	P value
Mean intraop	700.2±16.4	682.3±13.2	383.2±11.2	<0.001
Blood Loss (ml)
Short segment (ml)	527.2±12.2	517.4±12.2	266.3±9.2	<0.001
Long segment (ml)	1018.6±25.3	827.2±15.1	463.2±13.1	<0.001
Mean surgical time (min)	160±4.2	167±5.2	134±2.5	<0.001
Short segment	139±2.1	144±2.8	101±2.1	<0.001
Long segment	197±3.2	196±3.6	169±3.6	<0.001
Complications
Dura injury (No.)	3	2	1
Postop neurological deficit (No.)	0	0	0
Epidural hematoma (No.)	0	0	0