Mesh skin grafting!
Probably the coolest thing, a mesh skin graft can be either full- or partial-thickness sheet of skin used for the reconstruction of wound closures that cannot be closed primarily.
The tiny holes, or fenestrations on the skin are made to allow the graft to be expanded to cover large defects, provide a route for drainage of blood or serum that may accumulate under the graft, which helps reduce tension and the risk of infection and improve vascularization, and increase the flexibility of the graft so that it can conform to uneven shapes.
The healing occurs as the spaces between the mesh fill in with new skin growth.
Repost from @medicaltalks