Fig. 3

a Preoperative CT of patient 3 indicates subcutaneous abscesses and osteolysis (left, patient 3 in Table 1). Preoperative image shows an infected fistula discharging pus due to osteoradionecrosis (right). b The necrotized mandible was removed and healthy bilateral mandibular condyles were preserved (top). Osteotomy was performed in two places in the 19-cm-long fibula and the graft was transplanted into the mandibular defect (bottom). c Seven months after surgery, the flap survived completely and dental implant installation was successfully achieved. A scar revision around the mouth was proposed, however the patient did not provide consent for the same and was satisfied with the achieved results