I remember many years ago there was some study being done into deer antler as a way to integrate implants with zero chance of rejection (something about deer antler being bone that penetrates through the skin without causing any problems), and something about using squid cartilage for implanting circuitry for similar reasons, but the coolest advancement that I’ve seen for prosthetics has been 3d printing.
I saw an open source project for 3d printing prosthetic limbs with a focus on making affordable prosthetics for kids since they grow so quickly they need new fittings quickly as well. And beyond that, I haven’t heard of pretty much anything new in easily decades. The fact that much of our prosthetics technology isn’t that different from what they had in the Civil War is sad.
See the rest of my post: the people who are making it and why they’re making it.
I have no complaints about the people making LLMs that can spot tumors better than humans can, but I 100% agree with every single one of your points. The grifters and the AI fad of venture capitalism are ruining a useful technology and ruining the world and society along with it for a quick buck.