endoprosthesis
Pronunciation: EN-doh-pros-THEE-sis
Internal prosthetic device used to replace resected bone in tumor surgery.
Full Definition
An endoprosthesis is an internal prosthetic implant designed to replace bone and joint structures removed during tumor resection. In orthopedic oncology, endoprostheses are commonly used for reconstruction following wide resection of bone sarcomas, particularly around major joints. These devices may be custom-made or modular, and can include growing prostheses for pediatric patients. Modern endoprostheses are typically made of titanium or cobalt-chromium alloys and may incorporate porous surfaces to promote bone ingrowth and improve long-term fixation.
Usage
Usage note: Plural form is 'endoprostheses'; distinguish from standard joint replacements by specifying 'tumor endoprosthesis' when context is unclear.
In Context
- "The patient underwent distal femoral endoprosthesis reconstruction following tumor resection." — Operative note
- "Long-term endoprosthesis survival rates exceed 90% at 10 years for this indication." — Literature review