Endoprosthetic replacement of the distal tibia and ankle joint for aggressive bone tumours

Abstract 

Below knee amputation remains the treatment of choice for most patients with aggressive tumours of the distal tibia. We report the clinical and functional outcome of limb preserving surgery and endoprosthetic reconstruction of the distal tibia and ankle joint in five patients who declined amputation. The mean age was 32 years. Two had osteosarcoma, one Ewing’s sarcoma, leiomyosarcoma and Giant cell tumour. Three patients developed significant complications including local recurrence, wound dehiscence and infection, and fibula impingement. Despite these complications the patients declined amputation even in the presence of significant discomfort. Early function was excellent in all patients but deteriorated with time. The patients still maintained an Enneking Score of more than 50%. Some patients are unwilling to undergo amputation for aggressive tumours of the distal tibia. For these, excision and reconstruction with endoprosthesis allow early functional recovery but there is significant medium term morbidity and functional deterioration.

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