Which flap is provided as an example of a free flap for lower-extremity reconstruction?

Which flap is provided as an example of a free flap for lower-extremity reconstruction?

• A. Rectus abdominis free flap
• B. Gracilis free flap
• C. Anterolateral thigh free flap
• D. Latissimus dorsi free flap

Answer: (D)

A free flap is tissue moved from one part of the body to another with its own blood supply reconnected under a microscope, and in the leg, you want tissue that provides enough bulk, reliable blood flow, and versatility to fill dead space and cover exposed structures. The latissimus dorsi free flap fits this role particularly well for large lower-leg defects. It offers substantial muscle mass or a sizable myocutaneous paddle, which is ideal when you need both coverage and volume to rebuild soft-tissue padding around bones and tendons. The thoracodorsal vessels give a long, reliable pedicle that reaches leg recipient vessels, making microvascular connections more straightforward. Donor-site morbidity is generally acceptable, with a visible back scar and usually preserved shoulder function. Other options can be excellent in many scenarios—rectus abdominis provides a large flap but can compromise abdominal wall function; gracilis is thinner and better for smaller defects; anterolateral thigh is very versatile and often a workhorse for many leg defects, but for very large or bulky reconstructions, the latissimus dorsi offers a robust, well-established option.

A free flap is tissue moved from one part of the body to another with its own blood supply reconnected under a microscope, and in the leg, you want tissue that provides enough bulk, reliable blood flow, and versatility to fill dead space and cover exposed structures. The latissimus dorsi free flap fits this role particularly well for large lower-leg defects. It offers substantial muscle mass or a sizable myocutaneous paddle, which is ideal when you need both coverage and volume to rebuild soft-tissue padding around bones and tendons. The thoracodorsal vessels give a long, reliable pedicle that reaches leg recipient vessels, making microvascular connections more straightforward. Donor-site morbidity is generally acceptable, with a visible back scar and usually preserved shoulder function.

Other options can be excellent in many scenarios—rectus abdominis provides a large flap but can compromise abdominal wall function; gracilis is thinner and better for smaller defects; anterolateral thigh is very versatile and often a workhorse for many leg defects, but for very large or bulky reconstructions, the latissimus dorsi offers a robust, well-established option.