Estimation of reconstruction results of the ankle joint with the megaprosthesis for aggressive bone tumors of disral tibia

In a current of two years with 2008 for 2010, to six patients with primary malignant and aggressively benign bone tumors of the distal tibia executed six operations, in value of tumor resection with the subsequent reconstruction of defect by an anklejoint endoprosthesis. In group of patients there were five males and one female, with a mean age of 30 years. Among the treated patients 2 were with an osteosarcoma, 2 with Ewing’s sarcoma and 2 with giant cell tumor. The mean duration of followup after the operation was 14,7 months (7 to 28). Reconstruction of the distal tibia defect was carried out using oncological modular endoprosthesis of the ankle joint. Median recurrence free survival during 2,4 years was 83%. Progressing of the primary disease is revealed in 50% in the form of occurrence of the distant metastasis in lungs. A mean functional result assessed with the using of the MSTS system and consisted 75%. During the whole follow up period non of six patients had complications such as periprosthesis infection, instability of a design of endoprosthesis or its fracture. One patient with osteosarcoma half a year after endoprosthesis was installed, revealed a local recurrence during conservative treatment, amputation has been executed. To achieve good clinical and functional results absolute indications for reconstructive operations of an anklejoint should be strictly followed with careful selection of patients according to the results of conservative treatment.

tumors of distal tibia, reconstruction of the ankle joint, megaprosthesis