No breakthroughs since year 2000, but its worth mentioning skin mesh – the skin is cut like a chain link fence, so that it can be spread out over a larger area – and skin mince – the skin is minced up, then spread ‘like peanut butter’ over the wound so that it can be spread thinner and farther.
AFAIK, laboratory-grown skin (from your own skin cells) is still too fragile to be used for anything other than temporary grafts.
They covered most of this kid’s body I think and replaced it with skin using gene editing tools to replace the skin that had a faulty protein from a rare genetic disease.
“covering 80% of the boy’s body in strong and elastic epidermis, the researchers report online today in Nature. What’s more, he’s de”
The bit anbout “strong and elastic” was the bit I wasn’t expecting. That article also notes the importance of getting the right cells to start with, which seems to be an ongoing area of research.