In this retrospective study, 31 reconstructions using thin anterolateral thigh flaps and six cadaveric dissections of the thigh were investigated in consideration of the anatomic variations of the perforator vessels in the adipose layer, the safe area of flap circulation, and the clinical indications. Three variations of the perforator vessel course in the adipose layer were predicted correctly. The safe radius of a thin anterolateral thigh flap with a thickness of 3 to 4 mm was determined to be approximately 9 cm from the point where the perforator met the skin. The use of a thin anterolateral thigh flap for reconstruction of the neck, axilla, anterior tibial area, dorsum of the foot, circumference on the ankle, forearm, and dorsum of the hand was therefore recommended.

A defatted (thinned) anterolateral thigh flap was designed to reconstruct skin defects requiring thin flap coverage. We used this flap as a free flap for five cases of skin defects, and the outcomes of the reconstructions were all successful. The vascular pedicle of this flap, the cutaneous perforator of the lateral circumflex femoral artery, is about 8 cm long and 2 mm in diameter, and it is ideal for microvascular anastomosis. Thinning is performed in about 3 to 4 mm of thickness almost uniformly except for the vascular pedicle. It was ascertained as one of the useful donor sites of the free thin flap. The virtue of the thin anterolateral thigh flap is its uniform thinness compared with other thin flaps reported previously--the thin groin flap and the thin rectus abdominis musculocutaneous flap. We considered thin flaps as an entity, and they are classified into three types.

Therapeutic, IV.

Vascularized supraclavicular lymph node transfer is an effective technique for the treatment of advanced stage LEL. Lymphaticovenular anastomosis is also effective, but to a lesser degree than VSLNT. However, LVA is less invasive and requires a shorter hospital stay.

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Diagnostic, IV.

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