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.
To harvest a thin flap from the groin and hypogastric area, the authors developed a new prefabricated flap using the transversalis fascia as a carrier. The transversalis fascia is a very thin and abundantly vascularized tissue nourished by the deep inferior epigastric vessels. Flap prefabrication was performed by inserting the transversalis fascia between the thinly undermined skin flap and the tissue expander placed beneath the skin flap, followed by a pretransfer delay procedure around the flap. After a 3-week interval, the flap was transplanted with no complications, such as congestion and thrombus of anastomosis. By using this technique, it was possible to elevate an equally thin flap from the groin and hypogastric area while avoiding morbidity of the donor site.
A large umbilical protrusion with redundant skin accompanying an umbilical hernia sometimes needs umbilicoplasty. Although several different techniques for making umbilical depression have been used, the results of the plastic surgery are sometimes unsatisfactory due to postoperative flattening or disappearance of the umbilical depression. To make a permanent umbilical depression that is cosmetically acceptable, we have modified the techniques. Umbilicoplasty was performed in 14 children whose ages ranged from 6 months-6 years and 3 months (median, 1 year and 10 months) and who had umbilical hernia with a large umbilical protrusion. After the fascial defect was closed, the diameter of the umbilicus was reduced to half that before surgery by removing fan-shaped skin flaps and approximating skin edges, and then inverting the umbilicus and fixing it caudally to the fascia and skin. There were no postoperative complications, and no flattening or disappearance of umbilical depression was observed during the follow-up of 10-19 months. The authors' technique of umbilicoplasty for a large protruding umbilicus accompanying umbilical hernia is a simple method that produces acceptable cosmetic results.
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