A 43-year-old man sustained severe injuries to his lower limbs with extensive soft-tissue damage and bilateral tibial-fibular fractures. Acutely, the patient underwent external fixation and a free latissimus dorsi flap for soft-tissue coverage of the left leg. However, the tibia had a nonviable butterfly fragment that left a 7-cm defect after debridement. Subsequently, the contralateral fractured fibula was used as a bridging vascularized graft for this tibial defect. The transfer of a fibula containing the zone of injury from a previous high-energy fracture has not been reported. This case demonstrates the successful microvascular transfer of a previously fractured fibula for the repair of a contralateral tibial bony defect.