Functional Limb Salvage After Landmine-Induced Hindfoot Injury Using a Composite Calcaneus–Achilles Allograft

Case: A 22-year-old man soldier sustained a Gustilo–Anderson type IIIB hindfoot injury from a landmine blast. Initial limb salvage included polymethylmethacrylate spacer insertion, reverse sural flap, and external fixation. Definitive reconstruction used a composite calcaneus–Achilles tendon allograft and an anterolateral thigh flap with tensor fascia lata. By the 3-year follow-up, he regained full ambulatory function and independence in all daily living activities. Conclusion: Structural allograft reconstruction of the calcaneus and Achilles tendon can be a viable limb salvage option for blast injuries, facilitating functional recovery and independence when traditional approaches may lead to amputation or long-term disability.