What Is Skin Grafting?

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Skin grafting process

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It is a process of deep processing on the reverse side of sofa fabric. Generally, the face cloth is stamped with imitation leather, and the bottom cloth is generally planted on the knitted fabric. Its role is to make the fabric more leather-like. Such sofa fabrics have higher wear resistance. The cost of skin grafting is generally around 9 yuan. Face cloth style can also use PU.

Skin graft

Autogenous skin transplantation is a common method for treating skin defects caused by trauma, burns, and other factors. Skin grafting involves the free grafting of skin tissue alone and the transplantation of pedicled skin flaps or skin tubes with simultaneous transplantation of skin and subcutaneous tissue.

Free skin graft

Free skin graft transplantation is to cut the human skin from one part of its thickness or the thickness of the whole layer, completely separate it from the body, transplant it to another place, re-establish blood circulation, and continue to maintain its vitality for the purpose of repair. This surgical method is called free skin graft or free skin graft. According to the thickness of the transplanted skin, it can be divided into four types: thin-layer skin (also called thick-blade skin), medium-thick skin, full-thickness skin, and full-thickness skin graft with subdermal vascular network.

The early growth and healing process of free skin graft can be divided into plasma nutrition period and vascular nutrition period.

(I) Plasma nutrition period: After the skin graft is transplanted for the first 24 to 48 hours, nutrition is maintained by the exuding plasma on the wound.

(II) Vascular nutrition period: The blood vessels of the skin are from: The capillary of equal caliber between the skin and the wound establishes a direct relationship. This connection can be seen 18 hours after the operation. The endothelial cells of the blood vessels at the base and edge of the wound produce new hair cell tube buds, which grow into the skin through the cellulose net between the skin and the wound. In this way, the superficial skin sheet and the thin medium-thick skin sheet have better blood vessel formation on the second day after operation, and the thicker one on the third day after operation. On the 10th postoperative day, the skin became more stable.

Skin graft (cutaneous tube) transplantation

Flap transplantation, also known as pedicled skin transplantation. A skin flap is a tissue block composed of skin and subcutaneous tissue that can be transferred from one part of the body to another. During the transfer process, one or two pedicles need to be connected, or they may not be connected for the time being, and the blood vessel anastomosis is performed after transplantation.

The flap's blood transport and nutrition relied on the pedicle supply early on. When the flap healed at the transplant site about 3 weeks later, a new blood circulation system was gradually established, and then the pedicle was cut off, and the flap transplantation process was ended. Sometimes, some flaps can also be constantly pedicled, such as local rotation flaps or push flaps ^[1] .

The main blood vessels of the nourishing flap are in the deep tissues of the flap. When large flaps are separated, a deep fascia must be included to protect the vascular network on the deep side of the subcutaneous fat. If you feel that the flap is too thick to affect the local function or appearance after repair, you can remove the fat in stages (ie, fat removal) 3 to 6 months after the flap is transferred to live.