We report 1 case of successful treatment of radius and ulna nonunion by a folded vascularized fibular graft, in which 2 parallel fibular struts remained connected by the periosteum and peroneal vessels, and another case of infected nonunion of the ulna and radius with osseous and soft tissue defects treated by a free fibular osteoseptocutaneous flap with folded fibular graft in a 1-stage procedure.