grafting


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Related to grafting: skin grafting, tissue culture

grafting

 [graft´ing]
transplantation. The term grafting is preferred in the case of skin grafting and of synthetic grafts such as arteriovenous grafts.
skin grafting implantation of patches of healthy skin on a denuded area to provide epithelial covering; the skin may come from another area with healthy skin from the patient's own body or from the body of a skin donor. The most important function of skin grafting is to promote healing of large surfaces that have been burned or wounded, or that have become ulcerous or cancerous. If burns or other injuries are extensive, grafting can prevent extensive scarring with unsightly tissue that cannot perform all the necessary functions of normal skin. Skin contractures can thus be avoided.

The skin to be grafted is cut usually from the chest, thigh, buttock, abdomen, lower part of the neck, or behind the ear. It may be removed in very thin strips or as a thin layer of superficial skin, and it must be placed in its new location without delay. If delay is unavoidable, it is placed in a saline solution or refrigerated. In this kind of free graft, the skin is cut entirely away from the body before transplantation and then is sewed into place; a pressure dressing is applied or a tissue glue is used. Afterwards the skin must depend for its nourishment on the surrounding tissue in the new location.

If a large thick area of skin containing much underlying tissue is to be moved, the traditional method has been to do this by means of a pedicle flap. For example, an injured hand that needs skin grafting would be strapped against the abdominal wall to receive a pedicle graft of skin from the abdomen. However, the introduction of microsurgery has eliminated much of the need for this kind of graft.

A skin graft can sometimes be made by the simple procedure of cutting a piece of healthy skin from one part of the body, such as the back or the thigh, and stitching it to the injured area. Small arteries from the tissues surrounding the injured area then grow into the graft, nourish it with blood and promote normal growth. If the area to be covered is large, a number of separate patches may be stitched to it, forming islands of skin that will enlarge with healing until the entire area is covered. This is called “postage stamp” or pinch grafting.

With the advent of microsurgery, much of the inconvenience and lengthy waiting necessary for successful grafting of skin flaps have been eliminated. It is now possible for a surgeon to perform what are called free-tissue transfers. The skin flap is removed from the donor site and transferred directly to the distant recipient site where circulation to the free flap is reestablished by microvascular anastomoses.

There are many different types of skin grafts, including dermal or dermic, epidermic, full-thickness, split-thickness, thick-split, inlay, mesh, pinch, sieve, and Ollier-Thiersch grafts. See also flap.

graft·ing

(graft'ing),
The process of applying a graft.

graft·ing

(graft'ing)
Surgical transplantation of living tissue.
[O.Fr. graffe]
References in periodicals archive ?
When the FT-IR spectra of the grafting studies on Cts.met are examined, the following results are observed.
AA (reagent-grade) was used as grafting monomers without further purification.
Patients, who underwent single LIMA-LAD or LIMA-LAD plus right gastroepiploic artery (RGEA)-posterior descending artery (PDA) anastomoses, underwent minimally invasive direct coronary artery bypass grafting (MIDCAB) through lower median mini-sternotomy.
Because grafting is a seaming technique that mimics the structure of the knitted fabric--the way the stitches interlock--it is the most invisible joining method.
(2012), the proliferation and adhesion of a tissue callus can occur during the compatible and incompatible grafting of different Prunus combinations up to one week after grafting.
With appropriate site selection, meticulous technique, and good patient communication, dermatologists can keep full thickness skin grafting in the repertoire of viable options for excellent cosmesis, and a valuable tool in their own right.
Grafting is a way to multiply plants that don't form roots readily as cuttings or come true from seeds.
In some cases, this incompatibility is only observed years after the grafting is performed, resulting in differences in growth and often breaking the connectivity of the host and graft at the graft point.
Rabozzi, "Can transit-time flow measurement improve graft patency and clinical outcome in patients undergoing coronary artery bypass grafting?" Interactive Cardiovascular and Thoracic Surgery, vol.
So we tried to overcome these shortcomings by using new grafting techniques to correct alar retraction.
Bone grafting is a surgical procedure that is used to restore the function of bony structures.