The Lateral Intercostal Neurovascular Free Flap

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Abstract
The lateral intercostal flap is a new neurovascular flap that may be used as a free or island flap. It is based on the lateral cutaneous branch of a single posterior intercostal neurovascular bundle. The donor area of the flap is the anterolateral skin of the abdomen. The flap is large, thin, and has a long pedicle that contains the lateral cutaneous nerve. The donor pedicles of the flap are multiple, and its venous drainage is adequate. The detection and design of this flap were based on information gained from the dissection of 95 intercostal spaces in 40 fresh cadavers. The flap was then applied 12 times in 11 patients. Ten flaps were successful, one flap was partially lost, and one was completely lost. The flap was used as a noninnervated flap to resurface six defects in the neck and one facial defect, and it was used as an innervated flap to cover two hand defects and two heel defects.

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