Use of Endoprosthetic Diaphyseal Replacement: A Novel Approach to Management of Extensive Metastatic Tumor of the Midshaft Radius

We report the first use of an endoprosthetic diaphyseal replacement after the excision of a midshaft radial tumor. We present a rare case of a solitary midshaft radial metastasis in a 72-year-old gentleman who was treated 8 years earlier for primary renal cell carcinoma by radical nephrectomy. Follow-up for this patient was 25 months after implant insertion and at the latest review was pain-free. Functional scores for the elbow (using the Mayo Elbow Performance Score) and the wrist (using the Mayo Wrist Score) were 80 and 60, respectively, both out of 100. Use of a midshaft radial endoprosthesis provides a good functional outcome and symptom relief after extensive tumor resection, with regard to functional outcome and symptom relief.