**Core Concept**
The Wolfe graft is a type of skin graft that involves transferring a thin layer of skin from a donor site to a recipient site, typically used for burn wounds or other areas with extensive skin loss. This procedure is crucial in reconstructive surgery and requires meticulous planning to ensure optimal outcomes.

**Why the Correct Answer is Right**
A Wolfe graft is a split-thickness skin graft (STSG), which means it consists of the epidermis and a portion of the dermis. This graft is harvested using a dermatome, a specialized instrument that removes a thin layer of skin from the donor site. The harvested graft is then applied to the recipient site, where it adheres due to the remaining dermal elements. The epidermal layer of the graft begins to regenerate, eventually covering the wound.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because a full-thickness skin graft (FTSG) involves transferring the entire epidermis and dermis, whereas a Wolfe graft is a split-thickness graft.

**Option B:** This option is incorrect because a pedicle graft involves transferring a flap of tissue with its own blood supply, whereas a Wolfe graft relies on diffusion of nutrients and oxygen from the recipient site.

**Option C:** This option is incorrect because a skin flap involves transferring a piece of tissue with its own blood supply, whereas a Wolfe graft is a skin graft without a blood supply.

**Clinical Pearl / High-Yield Fact**
When performing a Wolfe graft, it's essential to ensure the recipient site is free of infection and has a stable blood supply to promote optimal graft adherence and survival.

**Correct Answer: D. Wolfe graft is a type of split-thickness skin graft.**