[annapurna]

Originally Posted by laid up doc

last on my list of implants, were you to decide you MUST have ADR, would be a prodisc - b/c the chromium/cobalt alloy is less stable and pieces will get into your bloodstream. this can cause further autoimmune reaction, or a local problem... all VERY BAD STUFF.

Sorry to outright contradict but titanium is actually far less stable and far more reactive. It's likely that titanium reacts so quickly the outer surface is passivated (completely reacted) before it can do anything to you but, should wear particles turn out to be a problem for titanium, they'd likely to be as least as serious as the chrome-cobalt alloys. Basically, metal wear particles are bad news. Plastic wear particles aren't good news either but at least they're inert.