When the nose is partially or completely damaged due to trauma, infection or burn, it not only hinders the normal function of the nose, but also damages the appearance, which brings adverse effects on people's psychological and social activities. In particular, the defect of the alar will have a great impact on the appearance. So? Let's take a look at the following explanation. Professionals point out that the repair of alar defect has the following situations: 1. Defect above the alar: cut off the scar first, cut off all the contracture scars, cut the skin below to relax, and then pull it down to make it symmetrical with the opposite side. Then the skin graft was pressurized, and the full-thickness skin graft was taken, transplanted to the wound, carefully sutured, bandaged and fixed under pressure. It takes about two weeks to open the package and take out the stitches. 2, alar edge defect: this defect is often full thickness, including alar cartilage. Spiral tissue is the most ideal material for implants, which can be completed at one time, with similar quality, thickness, elasticity and luster. If the width of the required graft is less than 1.5cm, the deformation of the ear shell is not obvious. After the transplanted tissue survives, there is generally no contraction.