More information about Dr. De Smet and metal on metal hip resurfacing and ceramic on ceramic ReCerf hip resurfacing available here: 

Dr. De Smet explains what ceramic on ceramic ReCerf hip resurfacing is in a video here and it’s advantages compared to metal on metal hip resurfacing devices:

https://surfacehippy.info/dr-de-smet-offers-new-recerf-ceramic-on-ceramic-hip-resurfacing-in-south-africa/