I think they did but only from the POV of mechanics. You have to remember that these metals had been in use in human medicine for years in the form of bone plates and screws and intramedullary nails without any problems so they were reckoned to be inert. As surgeons in London last Dec kept saying "Who knew there was this other side to biomechanics which is only now being revealed because of the advanced technology in searching for them." NOW we know but we still only know a part of the story. It really is a can of worms.
The habit of interchanging femoral stems from one manufacture with heads from another, for instance, has been going on for some time and where there was a mismatch in size, the manufacturers have made it possible by supplying trunnion sleeves. Now it seems that the sleeves themselves may be one problem, as I said in my notes. Did you read those?
The habit of interchanging femoral stems from one manufacture with heads from another, for instance, has been going on for some time and where there was a mismatch in size, the manufacturers have made it possible by supplying trunnion sleeves. Now it seems that the sleeves themselves may be one problem, as I said in my notes. Did you read those?