Just got off the phone with mom and dad, and he seems in good spirits. Since the thumb went through the wood chipper, there was nothing to reattach, so he just had plastic surgery to fix the rest of the thumb. They couldn’t save the knuckle (and I guess what use would a knuckle be with no thumb on the other side), so he now has a nub. They have him pretty medicated, so I doubt he will be in pain for a couple of days.
The good news is that his heart has to be ok and completely recovered from his mild heart attack in January, because if anything would give me a heart attack it would be losing my thumb in a wood chipper. I just refuse to have power tools like that or circular saws or chainsaws within 100 yards of me, for obvious reasons.
Thanks for all the nice thoughts in the previous thread.