Table 1:

Procedure characteristics

	Kyphoplasty (n = 191)	Vertebroplasty (n = 190)	P Value
Surgery as randomized (No.)	191	190
Physician type (m) (%)			.019
Interventional radiologist	117 (61.3)	138 (72.6)
Interventional neuroradiologist	33 (17.3)	27 (14.2)
Orthopedic surgeon	41 (21.5)	23 (12.1)
Neurosurgeon	0	2 (1.1)
Anesthesia (m) (%)			.086
Local with conscious sedation	125 (65.4)	143 (75.3)
General	55 (28.8)	37 (19.5)
Other	11 (5.8)	10 (5.3)
Hospitalization (m) (%)			.014
Outpatient	109 (57.1)	132 (69.5)
Inpatient	82 (42.9)	58 (30.5)
Postural reduction performed (m) (%)	154 (80.6)	142 (75.1)	.217
Procedure duration (min) (mean) (SD)	40.0 (22.0)	31.8 (19.3)	<.001
Fluoroscopy duration (min) (mean) (SD)	10.0 (6.3)	8.5 (4.9)	.008
Duration of stay (hr) (median) (IQR)	22.0 (6.0–26.0)	8.0 (5.0–24.0)	.010
Fractures treated	n = 244	n = 235
Procedure (m) (%)			<.001
Bilateral	242 (99.2)	151 (65.1)
Unilateral	2 (0.8)	81 (34.9)
Total cement volume (mL) (median) (IQR)^{^a}	4.6 (3.4–6.0)	4.0 (3.0–6.0)	.053
Fractures scanned by CT^{^b}	n = 214	n = 201
Vertebral body volume (mL) (median) (IQR)	25.7 (19.3–31.4)	25.1 (19.4–31.9)	.74
Cement volume (mL) (median) (IQR)	5.2 (3.8–6.3)	4.6 (2.9–6.5)	.037
Cement/vertebral ratio (median) (IQR)	0.21 (0.16–0.26)	0.19 (0.13–0.25)	.008

Note:—(m) indicates numerator (No.) in category; IQR, interquartile range.
↵a For BKP, all patients were treated with HV-R bone cement (Kyphon; Medtronic Spine, Sunnyvale, California). For VP, 46 (24.3%) patients were treated with Spineplex (Stryker, Kalamazoo, Michigan); 43 (22.8%), with Parallax (ArthroCare, Austin, Texas); 34 (18.0%), with AVAtex (CareFusion, San Diego, California); 14 (7.4%), with Confidence (DePuy Spine, Raynham, Massachusetts); 11 (5.8%), with HV-R (Kyphon); 10 (5.3%), with Visioplast (Tecres, Verona, Italy); and 10 (5.3%), with Vertefix (Cook, Bloomington, Indiana). The remaining 21 (11.1%) were treated with other bone cements.
↵b CT assessments were made by the core radiographic laboratory.