[jss]

Zen,

Inside the M6 ADR sheath, there is a lot of empty space and a lot of surface area of the internal components. The sheath contains two pin holes that will allow our interstitial fluid to fill up the inside of the M6 and will also allow that fluid to flow in and out of the disc. It seems plausible that a pathogenic microbe could pass into the disc through the aforementioned pin holes and begin reproducing inside the M6, feeding off our interstitial fluid, creating a colony that, due to poor access to the microbes, our immune system could never eradicate.

While the ProDisc suffers from this same potential, its only hard to reach surface area, between the polyethelene sheath and lower plate, is far smaller than exists within the M6. Which should greatly reduce the ProDisc's potential for such a scenario.

Is that scenario possible? I don't know, but it does seem plausible.

Make sense?