graft overlay
Technique where a thin autograft is placed over an integrated allograft or dermal substitute.
Full Definition
Graft overlay is a reconstructive technique where a thin split-thickness autograft is placed over a previously integrated allograft or dermal substitute to provide permanent epithelial coverage. This two-stage approach is commonly used in massive burns where initial coverage with allograft or dermal matrix provides immediate wound closure, followed later by autograft overlay once the underlying tissue has vascularized. The technique maximizes the use of limited autograft while providing durable reconstruction. The timing of overlay typically occurs 2-4 weeks after initial coverage, depending on the degree of integration and vascularization of the underlying graft.
Usage
Usage note: Distinguish from graft revision, which implies correction of a complication.
In Context
- "Autograft overlay was performed three weeks after initial allograft placement once adequate vascularization was confirmed." — Reconstructive surgery operative report
- "The graft overlay technique allowed maximal utilization of the limited donor site area in this massive burn patient." — Burn surgery consultation