If our arm or leg gets sliced off, why can’t our body recognize and repair the severed limb if it’s sewn back together?
In: Biology
You totally can. The hard part is that if you want it fully functional you also have to reattach all the blood vessels and nerve endings together, they can’t find each other if they’re just ‘loose’ in the wounded area and you just sewed the skin back together. But people can and do get appendages reattached.
Here is an old news story about a guy who had both arms ripped off in a farming accident in 1992, was able to call 911 with a pencil in his mouth and get them reattached. But he had to undergo many surgeries, still has aches and pains, can’t fully bend them properly or use all his fingers perfectly, stuff like that. Still way better than having no arms though!
https://www.sj-r.com/story/news/2012/02/20/farm-accident-victim-john-thompson/63280142007/
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