Originally Posted by deafskeptic
I think he's saying that because of the ossification, the worse it got the less likely the CI would help his son. Once most of the cochlear becomes ossified, the implant can become useless. This is assuming the operation takes place after ossification - not before the ossification. If I recall correctly, once the cochlea becomes ossified, it can be very difficult to operate on; this depends on the degree of ossification.
Still there are tales of success but I assume that those CIs' cochlears weren't as serverely ossified as RD's son.
Thanks for clarifying. I thought he was referring to the window of opportunity for oral language development. That's where I got confused.