Table 8.

The wound complication rates between the two groups in routine primary THA

	Drain use (n = 4943)	No drain (n = 1724)	P value
Non-infectious complications, N (%)
Fat liquefies and wound effusion	186 (3.76%)	63 (3.65%)	0.838%
Wound necrosis	47 (0.95%)	19 (1.10%)	0.585%
Hematoma	103 (2.08%)	37 (2.15%)	0.876%
Infectious complications, N (%)
Superficial wound infection	52 (1.03%)	19 (1.10%)	0.861%
PJI within a month postoperatively	4 (0.08%)	2 (0.12%)	1.000%

PJI periprosthetic joint infection