90 degree potentially dangerous

[DA REGION]

i know the arm behind the back past 90 degrees there is a call, refs call the leg, how about a shoulder?  at merriville ss i saw a young man get his shoulder cranked on past the point of 90 degrees, not once but twice.  there was no call.  i had heard that the young man was unable to move his shoulder and arm for some time after the the match.  there was an article in the paper the next day about how that match was about redemption for an earlier loss.  the refs at merrivlle ss were quick to call the arm at 90 and the leg.  someone is going have a career ending shoulder injury if this keeps up.