Table 3.

Injury and surgical characteristics

	No wound complication (n = 556)	Wound complication (n = 43)	Significance
Open fracture, no. (%)	49 (8.8%)	9 (20.9%)	0.020*
Part of lega
Forefoot	23 (4.1%)	1 (2.3%)	0.691
Midfoot	77 (13.8%)	4 (9.3%)
Hindfoot	250 (45.0%)	20 (46.5%)
Ankle	127 (22.8%)	9 (20.9%)
Lower leg	79 (14.2%)	9 (20.9%)
Previous surgery, no. (%)b	124 (23.1%)	9 (22.0%)	1.000
Acute operation
Acute	347 (62.4%)	28 (65.1%)	0.849
Elective	209 (37.6%)	15 (34.9%)
Type of surgery
Osteosynthesis	343 (61.7%)	25 (58.1%)	0.694
Arthrodesis	91 (16.4%)	7 (16.3%)
Implant removal	94 (16.9%)	7 (16.3%)
Other procedures	28 (5.0%)	4 (9.3%)
Days between injury and operation, median [IQR]c	7 [3–14]	7 [1–16]	0.732
Duration of surgery, median [IQR]d	75 [55–110]	89 [60–138]	0.101
Tourniquet use, no. (%)e	228 (41.1%)	7 (16.3%)	0.002*
Prophylactic antibioticsf
Yes	456 (82.9%)	34 (79.1%)	0.203
No	92 (16.7%)	8 (18.6%)
Therapeutic	2 (0.4%)	1 (2.3%)
Blood loss in mL, Median [IQR]g	100 [50–200]	200 [75–375]	0.036*
Primary closuree	550 (99.1%)	43 (100%)	1.000
Post-surgical dressingh			0.525
Pressure bandage	344 (63.8%)	26 (61.9%)
Cast	146 (27.1%)	10 (23.8%)
Negative pressure system	49 (9.1%)	6 (14.3%)

IQR inter quartile range, n number of included procedures, No number, % percentage of

*Statistically significant difference (p < 0.05)

^aMissing: 1 (in no wound complication, crush injury)

^bMissing 21 (19 in no wound complication, 2 in wound complication)

^cOnly for acute injuries, missing: 9 (5 in no wound complications, 4 in wound complication), N = 366

^dMissing 57 (56 in no wound complication, 1 in wound complication)

^eMissing 1 (in no wound complication)

^fMissing 6 (in no wound complication)

^gMissing 317 (291 in no wound complication, 26 in wound complication)

^hMissing 18 (17 in no wound complication, 1 in wound complication)