Regrowing Human Muscle

Last week it was wearable robots serving as a kind of exoskeleton that could help restore mobility after injury, and today's New York Times brings us actual human muscle regeneration using an extracellular matrix from a pig.

Obviously I'm not a doctor and I'm certainly not a research scientist so maybe this will all just come to nothing. But it's yet another reminder that the discussion about "costs" in health care policy and health economics suffers from a lot of fatal ambiguitie...