I just responded to a post about my situation. Had a traumatic brain injury 4 years ago, which was a life-or-death situation, and involved removing one side of my skull to relieve pressure on the brain. I did not have to have CI replaced
Most definitely go through the surgery. I had a traumatic brain injury 4 years ago, which required major surgery. Although I was implanted 22 years ago, it did not harm my Cochlear Implant.