The radial forearm flap, characterized by thin and flexible tissue, a large and long pedicle, and stable blood supply, had been frequently used. However, complications such as donor-site tendon exposure, aesthetic deformities resulting from skin graft closure, and the development of perforator flaps have led to a gradual decline in its usage. A radial forearm flap without skin grafting holds promise as a potential solution to these problems. In this study, we aimed to achieve primary closure of the donor site and cover the tissue defect of the hand by harvesting a radial forearm flap using the extended and divided latissimus dorsi flap technique. The flap was harvested using the conventional radial forearm flap harvesting method, and the skin island was divided into two parts along the fascia, which were then used to cover the defect. The flap donor site was closed primarily. This is a useful and simple method for covering extensive tissue defects of the hand while avoiding donor-site complications.
