Our work demonstrates that the “reverse” latissinnis dorsi musculocutaneous flap lias a predictable and consistent blood supply. A major portion of the muscle can be nourished by the dorsal perforating branches of the ninth, tenth, and eleventh intercostal vessels. The skin island based on the “reverse” latissimus dorsi muscle can be as large as 8 X 20 cm. This is confirmed by anatomic dissections and clinical cases. Knowledge of the blood supply facilitates elevation of the flap and extends its utility.
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