Just did some reading on torn labrums, the injury that Casey Janssen has.
If past results are any indication there is a better than 90% chance that he will never pitch at the level that he used to pitch at. If he makes it back at all.
Of the 36 pitchers that the writer below looked at who had torn labrums only one of the 36 recovered to the level that he used to pitch at.
Quote: re. torn labrums:
"If pitchers with torn labrums were horses, they'd be destroyed. Of the 36 major-league hurlers diagnosed with labrum tears in the last five years, only midlevel reliever Rocky Biddle has returned to his previous level. Think about that when your favorite pitcher comes down with labrum trouble: He has a 3 percent chance of becoming Rocky Biddle. More likely, he'll turn into Mike Harkey, Robert Person, or Jim Parque, pitchers who lost stamina and velocity—and a major-league career—when their labrums began to fray."
.....
"So far, the message from the nation's orthopedic surgeons is: We can't rebuild them. Dr. Anthony Tropiano, a top baseball arm doc, says the best available treatment option today is to do nothing. "We call it conservative treatment," he says, "but that's just a euphemism for a little rehab and a lot of prayer."
http://www.slate.com/id/2100895/
White Sox GM Ken Williams shafted Gord Ash of the Blue Jays in 2000 when he traded Mike Sirotka to the Blue Jays for David Wells basically ( couple of other throw ins). But Sirotka had a bad shoulder which Ken Williams concealed from Gord Ash when he made the trade. And it turned out that the bad shoulder was a torn labrum and Sirotka's career was basically over with.
Ash tried to rescind the deal but MLB told Ash to shove it and that he should have done a thorough physical on Sirotka before the trade was consummated.
http://en.wikipedia.org/wiki/Mike_Sirotka