I find it funny that you spend so much time on a reference device when Zimmers predicates for its AMCs ceramic heads are Biolox.
I agree its worth noting Iconacy however. It doesnt matter if the femoral head is from Ceramtec, Coorsetek, or Kyocera. They are all ZTA heads and all potentially toxic.
IF you examine this from a perspective of all small companies are shills for large companies and AMDA may be a shill for coorstek, then CTL may be a shill for stryker. I can find no evidence Styker is being converted to cerasurf.