Split Thickness Graft Components

A Split thickness graft, often abbreviated as STSG, is a type of skin graft used in reconstructive surgery.

It involves harvesting the superficial layers of the skin from a donor site to cover a defect elsewhere.

Graft Layers Explained

The layers included in a Split thickness graft are:

• The entire Epidermis (the outermost layer of skin).
• A portion of the underlying Dermis (the layer beneath the epidermis).

The amount of dermis included can vary, making it a 'split' thickness rather than the full thickness.

Evaluating the Options

• Option 1 (Epidermis only): This is too superficial and not typically considered a standard split thickness graft.
• Option 2 (Epidermis and dermis): This describes a Full Thickness Graft (FTSG), not a split thickness graft.
• Option 3 (Epidermis and part of dermis): This accurately describes the composition of a Split thickness graft.
• Option 4 (Epidermis, dermis and part of sub cutaneous tissue): This includes deeper tissues than are typically harvested for a standard skin graft.

Therefore, the correct components for a Split thickness graft are the Epidermis and a part of the dermis.