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Table 2 General complications. NPWT - negative-pressure wound therapy

From: The use of negative-pressure wound therapy after total knee arthroplasty is effective for reducing complications and the need for reintervention

  Total NPWT Conventional dressing p
Haematoma 4.1% 2.1% 5.0% 0.34
Persistent drainage 4.1% 1.0% 5.5% 0.11
Hyperaemia 35.1% 24.7% 40.2% 0.01
Necrosis 6.4% 2.1% 8.5% 0.04
Dehiscence 7.8% 3.1% 10.1% 0.03
Blister 3.4% 1.0% 4.5% 0.17
Infection 2.4% 0.0% 3.5% 1
Any Complication 39.2% 28.5% 45.7% 0.001
Length of stay (days) 4.2 3 (1) 3 (1) 0.56
Reintervention 6.4% 2.0% 8.5% 0.001