Full-Thickness Skin Grafts (FTSG)

A full-thickness skin graft (FTSG) consists of the entire epidermis and the full thickness of the dermis, harvested down to the subcutaneous fat. Because the complete dermal architecture is preserved, including collagen bundles, elastic fibers, adnexal structures, and dermal vascular plexus. FTSGs provide the best tissue match of any graft type in terms of color, texture, thickness, and long-term cosmetic appearance. However, the full dermal thickness also means FTSGs have the highest metabolic demand and therefore require a well-vascularized recipient bed to survive. FTSGs are the workhorse graft in dermatologic surgery, used extensively after Mohs micrographic surgery for facial reconstruction when local flaps are not feasible or when the surgeon desires a simple, reliable closure with excellent cosmesis.

Donor site selection is critical to achieving optimal color, texture, and thickness match. The principle of "like replaces like" guides donor site choice. Skin adjacent to or from a similar anatomical region provides the best aesthetic outcome. Donor sites are chosen based on proximity to the defect, skin characteristics (sebaceous quality, thickness, color), laxity for primary closure of the donor site, and acceptability of the donor site scar.

A Burow's graft (also called a Burow's advancement graft) is a resourceful technique that uses the otherwise-discarded Burow's triangles (dog-ear repairs) generated during advancement flap closures or fusiform excisions as a free FTSG. This approach is elegant because it eliminates a separate donor site. The redundant tissue that would normally be excised and discarded is instead transferred to an adjacent or nearby secondary defect. The Burow's triangle is defatted and sutured into place as a standard FTSG. This technique is particularly useful when a patient has two adjacent defects, or when an advancement flap creates a secondary defect that can be grafted with the standing cone tissue from the primary closure.

FTSG survival depends on a sequential process of revascularization from the recipient wound bed. Understanding these stages is essential for postoperative management and patient counseling. Graft failure at any stage compromises the entire process.

Successful FTSG placement requires meticulous attention to graft preparation and recipient bed optimization.

FTSGs offer significant advantages over other graft types but carry distinct limitations that must be weighed in surgical planning.

FTSGs have specific contraindications related to their high metabolic demands. Understanding these limitations prevents graft failure and guides alternative reconstruction choices.

Postoperative management focuses on protecting the graft-bed interface during the critical first 7-10 days. Patients should avoid any activity that creates shear or tension at the graft site. The bolster is removed at 5-7 days; at this point, the graft should appear pink and adherent. Common complications include hematoma (most common cause of graft failure), seroma, infection, partial graft necrosis, and hyperpigmentation. Long-term issues may include graft contracture (though less than STSG), color mismatch (especially with sun exposure), and pin-cushioning (graft appears elevated due to subcutaneous fibrosis). Graft massage with moisturizer beginning at 2-3 weeks can improve pliability and reduce pin-cushioning.