Whenever there is a defect in the skin or a non-vital section of skin, such as from burns or other damage resulting in scars, it needs to be replaced with a partial or full thickness skin grafting. Skin generally covers the entire body and protects underlying tissues from damage and infection. It also provides thermoregulation via skin temperature changes and radiation of heat through the skin. Restoring a normal skin border is the purpose behind skin grafting.
Skin grafting was performed two millennia ago in India but wasn’t popular in western medicine until almost two hundred years ago. Grafting was found to speed healing and reduce fluid loss from major wounds and burns. Grafting makes wounds look better and reduces scar contraction. Wounds that extend to bone must be grafted because bone does not cover itself with tissue or skin.