Table 2.

Mechanisms and injuries of blunt trauma patients with extremity fractures.

	Without embolism	Fat embolism
Characteristic	(n = 324,049)	(n = 116)	p-value
Mechanism, n (%)
Bicycle accident	6363 (2.0%)	0	0.13
Motorcycle collision	26,506 (8.2%)	26 (22.4%)	<0.001
Pedestrian struck	22,924 (7.1%)	7 (6.0%)	0.66
Fall	179,512 (55.4%)	26 (22.4%)	<0.001
Motor vehicle collision	72,774 (22.5%)	46 (39.7%)	<0.001
Injury, n (%)
Traumatic brain injury	57,532 (17.8%)	25 (21.6%)	0.29
Face or neck	23,696 (7.3%)	9 (7.8%)	0.85
Spine	49, 277 (15.2%)	24 (20.7%)	0.10
Rib	53,909 (16.6%)	31 (26.7%)	0.004
Sternum	8671 (2.7%)	6 (5.2%)	0.10
Pelvic fracture	38,113 (11.8%)	24 (20.7%)	0.003
Upper extremity	82,914 (25.6%)	39 (33.6%)	0.047
Lower extremity	297,345 (91.8%)	114 (98.3%)	0.01
Esophagus	51 (0.02%)	0	0.89
Lung	46,486 (14.3%)	35 (30.2%)	<0.001
Heart	1743 (0.5%)	4 (3.4%)	<0.001
Stomach	239 (0.1%)	0	0.77
Small intestine	2223 (0.7%)	2 (1.7%)	0.18
Colorectal	2385 (0.7%)	2 (1.7%)	0.21
Pancreas	41 (0.01%)	0	0.90
Liver	11,793 (3.6%)	9 (7.8%)	0.02
Spleen	11,960 (3.7%)	10 (8.6%)	0.01
Kidney	5527 (1.7%)	4 (3.4%)	0.15
Other genitourinary	2614 (0.8%)	0	0.33
Crush	913 (0.3%)	1 (0.9%)	0.24
Burn	757 (0.2%)	0	0.60