There are other health issues at stake with bionics; they now find that stainless steel in the body causes a susceptibility to infection that is very serious...my Dad now has to have antibiotics for even minor procedures, even teeth cleaning. Of course after so many years of frequent antibiotic use he is now allergic to all of them, and gets very ill from them. Despite spinal surgery with Herrington rods, two knees and a hip, he's still in terrible pain all the time.
I don't know if the shoulder replacements now are all ceramic or not. And who knows what the future problems of some of the ceramic materials will be.
I'd be very skeptical about bionics, myself. My Dad (skeptical MD radiologist) also had many years reprieve after going to an Environmental Medicine doc and finding that wheat and dairy allergy set off his arthritis pain (and disease progression) greatly. He got about 15 years of doing much, much, better by modifying his diet. Now he's getting steroid injections for pain, which helps greatly with pain but seems to be causing a cascade of other health problems.
Best wishes on your decision.
Bruce M