[Adamantinoma of the tibia].

Adamantinoma of the tibia is a rare, malignant growth originating in epithelial fetal cells. We present a 17-year-old girl who had prolonged pain in her right calf for 6 years. X-ray showed a growing malignant lesion whose nature was confirmed by biopsy. After planning the anatomical and functional aspects, the tibia was excised in its diaphyseal part, which included the growth with wide margins. Iliac bone was implanted in place of excised tibial bone. After 1 year the implant showed complete healing and had grown to impressive size, ensuring safe carrying of body weight, and the length and function of the limb were completely normal. 4 years postoperatively no pathologic lesion was noted on clinical examination, in X-rays nor in another biopsy of the implanted bone and the surrounding soft tissues.