Local flap surgery (nearby tissue): A local flap uses tissue from around the wound site. This is commonly used when the wound is smaller, and the nearby tissue is healthy enough to rotate or advance into the defect. It is frequently used in skin flap surgery and hand and finger flap surgery.

Benefits of local flap surgery:

Shorter surgery time.
Similar skin texture and thickness.
Faster healing in many cases.
Often, no microsurgery is required.

Limitations:

Cannot cover very large defects.
Nearby tissue may also be damaged in crush injuries.

Regional flaps (from the nearby area)

Regional flaps borrow tissue from nearby areas such as the forearm. These are chosen when local hand skin is insufficient for coverage, but a full free flap is not needed. This option is common in deeper wounds needing stronger hand soft tissue coverage.

Free flap surgery (microvascular reconstruction): Free flap vs local flap becomes important when the injury is severe. A free flap is tissue taken from a distant area of the body and connected to the hand's blood vessels using microsurgery.

A free flap is chosen for:

Large wounds with major tissue loss.
Exposed tendon/bone with poor surrounding skin.
Complex trauma with multiple injured structures.
Need for durable coverage in high-function areas.

Free flap surgery usually means:

Longer operation.
ICU or high-dependency monitoring after surgery.
Close observation of flap blood flow.

Hand Flap Surgery: Soft Tissue Coverage and Reconstruction