mesh expansion ratio
The degree to which a skin graft is expanded through meshing, expressed as a ratio indicating coverage increase.
Full Definition
Mesh expansion ratio refers to the mathematical relationship between the original size of a skin graft and its expanded size after meshing, typically expressed as ratios such as 1.5:1, 3:1, or 6:1. Meshing involves creating small incisions in a sheet graft using a specialized dermatome, allowing the graft to be stretched to cover a larger area. The expansion ratio determines both the coverage area and the appearance of the healed graft, with higher ratios providing more coverage but potentially inferior cosmetic results. Selection of appropriate mesh expansion ratio depends on factors including available donor tissue, burn size, location, and cosmetic considerations. Higher expansion ratios may be used for life-saving coverage of extensive burns, while lower ratios are preferred for cosmetically sensitive areas.
Usage
Usage note: Express as numerical ratios (e.g., 3:1, not 3-to-1 or 3x1).
In Context
- "A 3:1 mesh expansion ratio was used to maximize coverage of the burn area." — Operative report
- "The mesh expansion ratio was limited to 1.5:1 to optimize cosmetic outcome on the face." — Surgical planning note