๐ ็ธฝ็ฎ้ ๏ฝ ๐ ่ฑๆๅๆ๏ผๆฌ็ฏ๏ผ ๏ฝ ๐ ๅฎๆด็ฟป่ญฏ ๏ฝ โญ ็ฒพ่ฏ็ญ่จ
Contraindications
Contraindications
If a surgical wound bed does not have an adequate blood supply, such as in an area of bone or cartilage devoid of periosteum or perichondrium, a skin graft is unlikely to survive. To improve the chances of graft survival and optimize cosmesis, delayed grafting may be considered to allow the wound bed to revascularize and form granulation tissue that will serve as a rich nutrient bed for the incipient graft.19,20 A hinge flap can also be utilized, where a flap of muscle or fat adjacent to the defect is incised with its vascular pedicle intact and inset over the surgical defect to allow for immediate graft placement (for a full discussion of hinge flaps, see Chapter 43).21,22