Hi Neal I had a major tear five years ago, surgeon said he would do more damage going in, high risk of major lasting damaged just from the operation, I passed out from pain the night after the fall which was a high speed onto end of my shoulder, I had 6 months of rehab, using a big rubber band, no riding at all in than time, came back stronger than before, 2007-8 NZ pre 81 125 champ, 2008-9 pre-75 250 3rd (on an XL350), 2009 NZ master games 3rd lites 45 plus. Neal don't give up & don't take no for answer.
Best of luck Tony