For large soft-tissue defects of the lower leg in trauma, which tissue transfer is typically used?

For large soft-tissue defects of the lower leg in trauma, which tissue transfer is typically used?

• A. Local flap
• B. Free flap
• C. Split-thickness graft
• D. Negative-pressure wound therapy

Answer: (B)

When a large soft-tissue defect in the lower leg follows trauma, reliable coverage is best achieved with a free flap. A free flap brings well-vascularized tissue from a distant site and can be shaped to fill dead space, cover exposed bone or hardware, and withstand infection in a contaminated wound. The tissue is reconnected microsurgically to blood vessels in the leg, giving robust, dependable coverage even when local tissue is damaged or insufficient. Local flaps depend on tissue adjacent to the defect and may be limited or unusable when the nearby tissues are damaged or scarce. Split-thickness grafts require a healthy, well-vascularized bed and cannot cover exposed structures like bone or tendons. Negative-pressure wound therapy is helpful for preparing a wound bed or temporary management, but it does not provide definitive coverage for a large leg defect.

When a large soft-tissue defect in the lower leg follows trauma, reliable coverage is best achieved with a free flap. A free flap brings well-vascularized tissue from a distant site and can be shaped to fill dead space, cover exposed bone or hardware, and withstand infection in a contaminated wound. The tissue is reconnected microsurgically to blood vessels in the leg, giving robust, dependable coverage even when local tissue is damaged or insufficient.

Local flaps depend on tissue adjacent to the defect and may be limited or unusable when the nearby tissues are damaged or scarce. Split-thickness grafts require a healthy, well-vascularized bed and cannot cover exposed structures like bone or tendons. Negative-pressure wound therapy is helpful for preparing a wound bed or temporary management, but it does not provide definitive coverage for a large leg defect.