Quoted from tlukka:I used a floor jack to hold up my TZ as I changed out a leg. It slipped and my TZ rolled to the floor almost taking me out in the process. Amazingly, we all came out unscathed.
I had a couple friends moving a TZ a few years ago. They took it out of the truck and set it on a couple of foldable metal saw horses. One of them collapsed and it came down on the top of one of their feet. Broke a number of bones. Six weeks later it hadn't healed correctly and they had to make corrections. Took about 3 months before it was back to normal.
FWIW, the foot belonged to a doctor.