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Table 1 The severity of wound dehiscence according to the Laing classification

From: Unilateral or bilateral V-Y fasciocutaneous flaps for the coverage of soft tissue defects following total knee arthroplasty

Grade Extend of wound dehiscence
0 Simple erythema, no superficial necrosis
1 Skin necrosis and wound breakdown, no sinus into the joint
2 Extensive skin necrosis with a wound sinus into the joint
3 Deep wound dehiscence with a sinus, little or no prosthetic exposure
4 Deep wound dehiscence, with overt prosthetic exposure