Thanks for the reply. It's the tumbling T. rex problem in spades. A mouse can fall many times its height. Don't even think about it. Sauropods appear to have had larger cartilaginous caps on the ends of their long bones and wrist bones.
Rugose bone is formed by bone growing up into the cartilaginous cap of hyaline cartilage.
However, hyaline cartilage can only get so thick before its force-distributing properties are compromised. IF sauropods reared THEN it seems more likely they would have had a more controlled descent back on to their forelimbs.