Some highlights:
- bone cells can grow directly on titanium
- they implant a titanium connector in the bone, extending out and protruding from the stump, which the detachable prosthesis connects to
- they surgically implant electrodes in the stump rather than on it, right on the nerves inside the muscles
- for amputations above the elbow, they actually redirect nerves that used to go to the hand to instead go to small existing muscles above the amputation
- nerve signals are too small for the electrodes, so the electrodes are designed to read the muscle fibers, basically to amplify the signal
- implantable part has no batteries, powered by patient's body
- prosthesis has an AI that is trained to interpret the signals
- brain-controlled prostheses can be used to treat phantom limb pain,
- phantom limb pain arises because the brain gets confused and thinks the missing limb is frozen or twisted in a bad way
- the hand has a sense of touch, which is relayed back to the patient via the same nerves that used to receive hand touch signals!
- ...it costs $10k :/ but I expected worse tbh