What is a common material used as a modular head on femoral stem hip implants?

Alumina, or aluminum oxide, is widely used as a modular head material in femoral stem hip implants due to its excellent mechanical properties and biocompatibility. Its high hardness and wear resistance make it particularly suited for load-bearing applications in hip replacements. The use of alumina allows for a lower wear rate compared to other materials, which is critical in reducing the overall wear debris and extending the lifespan of the implant.

Additionally, alumina’s favorable biological interaction helps minimize the risk of adverse tissue reactions. Its ability to be sterilized using conventional methods without degrading its properties further enhances its usability in surgical settings. Therefore, it is a preferred choice for ceramic femoral heads in hip arthroplasty, contributing to the durability and effectiveness of the implant.