First, some heartening news for anyone who has or knows someone with prosthetics. This prosthetic hand can feel. And this one? This one can be controlled by thought. Combine the two, and you've got an arm, controlled directly by nerve stimulation, that can feel. The tech is in it's infancy, but it is functional. No longer theoretical, it has been used. Ironing out the kinks to a useable degree is significantly easier than getting the tech to the point where that becomes an option.
Continuing on the TL9 medical trend, some scientists have supposedly managed to get blood cells and such to function as stem cells. And then there are these goggles that make cancer glow for easier removal. Other scientists have learned how to fix damaged-but-not-completely-severed spinal cords
Medical advancements can take a long time, so it's unlikely we'll see many or any of these anytime soon, but it's still nice to see how far we've come. Also, like Sci-Fi Friday, this may or may not become an actual recurring thing. It will probably be more of a "Whenever I wind up with sufficient material collected, posted on Tuesdays" kind of deal.