Adamantinoma of the tibia treated with a new intramedullary diaphyseal segmental defect implant.

In this case report, a 75-year old male presented with a mass on the anterior surface of the mid-shaft of the right tibia. Imaging studies showed a well-circumscribed radiolucent lesion in the anterior tibial cortex, without soft tissue extension. Plain radiographs and computed tomography scan of the chest were negative. Histological diagnosis was consistent with adamantinoma, a rare primary bone tumour. Wide tumour resection of approximately 16 cm of the tibial diaphysis with a surrounding cuff of normal tissue was performed. The bone defect was reconstructed using an intramedullary diaphyseal segmental defect fixation system. At 26 months post-operatively the patient is alive with no evidence of local recurrence, distant metastases or implant failure. The intramedullary diaphyseal segmental defect fixation system is associated with excellent oncological and functional outcomes. Intra-operative modularity, ease of application, immediate post-operative stability and rapid rehabilitation are the major advantages of this diaphyseal prosthesis.