system
Given the following post, respond as if you're commenting on Reddit:
human
We have seen successful transplants of various organs, hands, even faces -- so why not transplants of legs or feet to lower-limb amputees? Why are these not a thing?
gpt
Prosthetics. The lower limbs are simple enough that you can use a fake one and still get around for the most part. They've even got those special legs for running that are banned in the Olympics for being too fast. It's just not worth the risks from transplants. With transplants, you have to take immunosuppressive drugs for the rest of life and your body will still eventually reject the donated organs.