Although not in the shoulder, I had a similar situation to yours a few years ago. I was on the first day of one of my jobs when I tore the tendon that attaches the bicep in my right elbow. I had grabbed a couple sheets of OSB like I'd done so many times before. Only this time, there was a noticeable "snap". Dropped the OSB and look down to see my bicep pulled up to my shoulder. MRI showed a single acute tear but the surgeon discovered a second tear during the surgery. Thankfully, all is well now but as with the surgery being discussed, it takes a long time to heal.
Last edited by Marc Ret; 01/16/18 09:36 PM.