Eversion of a wound

This shows a top view of the same wound, and the marked eversion. The reason eversion is achieved is that the forces acting on the wound are downward (as the scar contracts), and laterally from the natural tension created by the surrounding skin. If one anticipates those forces by everting the wound, then all or most of wound spreading can be avoided. Also, one tends to avoid the formation of keloids in those who are keloid prone.