A surgical method where a segment of skin, along with underlying tissue and sometimes muscle, is relocated to cover an area that has lost or suffered damage to its skin and tissue due to injury, illness, or surgical procedures. Unlike a skin graft, a skin flap maintains its own blood circulation. These flaps can be either “attached,” staying connected to their original location, or “free,” where they are reconnected to blood vessels at the new site through microsurgery. Skin flaps adhere well even in cases where there has been significant loss of deep tissue, making them suitable for covering areas that have compromised blood supply.