Ceramic endoprosthesis for aggressive giant cell tumors near the knee: eight cases followed for more than 10 years

Eight patients with locally aggressive giant cell tumor were treated with m arginal resection and implantation of a ceramic endoprosthesis with a non-h inged knee joint. The patients have been followed-up for between 10 to 16 y ears. Newly formed bone appeared at the junction between implant and cortex and in 2 cases subsidence of the implant was seen. All the patients had go od function of the knee and no revision was needed.