INTRODUCTIONThe most common pattern used for the management of skin tumors or circular skin defects is elliptical excision and closure. This technique is simple and easy, but healthy skin in the corner of the defect is also removed, and it can leave a central depression with dog ears at its ends. Furthermore, these problems are exacerbated when an elliptical excision is performed in a region with insufficient skin redundancy, such as the pretibial region or the heel.Bilateral V-Y advancement flaps have been widely used to reconstruct facial defects [1,2]. These flaps simplify and ease mapping and the operative procedure. Moreover, they show good color and texture harmony because nearby tissue is used. In this technique, triangular flaps based on nutrient pedicles in subcutaneous tissue are usually elevated. Although these random flaps have been proven to have excellent vascularity in the facial region [3,4], repair of the extremities using these flaps has been regarded as more difficult than reconstructions elsewhere in the body because of poor blood supply and the pressure effects of dependency [5]. We performed bilateral V-Y advancement flaps in 24 patients with small Background Random type small V-Y advancement flap is widely used for facial reconstruction with advantages including good color and texture match. However, the flap is not as widely used in the extremities and back as in the face because of apprehension of the relatively poor vascularity as a risk factor of flap necrosis. We used a small bilateral V-Y advancement flap for the repair of extremity and back defects from various causes. Competent clinical outcomes are described. Methods Between 2007 and 2014, 24 patients (48 flaps) with skin defects in the upper or lower extremities and back were enrolled. The site of the defect was on back (n=6), forearm (n=7), upper arm (n=2), lower leg (n=5), thigh (n=3), and axilla (n=1). Results Among the 48 flaps, 47 survived (no event: 42 flaps, total necrosis: 1 flap, partial necrosis: 5 flaps). All partial necrotized flaps healed in 3-4 weeks with conservative care. However, debridement and skin grafting was required for the total necrosis flap. One total necrosis and two partial necroses occurred on the anterolateral side of the lower leg. Two partial necroses occurred on the paraspinal area. Conclusions Contour deformities including central depression and the dog-ear deformity were not observed. Small bilateral V-Y advancement in the extremity and back could be a safe and useful flap, if thick subcutaneous fat and subcutaneous plexus were saved. But areas with thin subcutaneous fat layer, such as the anterolateral lower leg, are poor candidates and carry the increased risk of improper subcutaneous pedicle circulation.