I've seen the artery pumped in a ham leg , I don't recall seeing it in a picnic , maybe it was shrunk back under the skin .
Damn.. its my english. . lol... its hock... pork hock.. not a pork chuck.. sorry for confusion...I have edit it in previous answers to avoid further confusion .What's the chuck bone ??
I highly doubt that....There you go.... now you know as much as I know....
Excellent flavor..... moist too......