Hello sir..
I would like to know more about your shoulder tear like muscle injured and its grade..
If I were your treating doctor then..
I would definitely tried some strengthening and stability exercises for your shoulder before recommending you for a surgery..
If you engage your shoulder in some kind of
rehabilitation...this will help you to recover faster post surgery...also help you to improve current functional limitations..so you have very less chances of loosing muscle..
Following a
shoulder surgery again you need to engage yourself in rehabilitation for atleast 6 weeks for regaining your strength and stability...
I would also suggest you to kindly share with us your
MRI or any other investigations taken to help you with some maintanence exercises...as well
In my opinion you can defer surgery for a while and try rehabilitation with a physio for six weeks... If rehabilitation fails to improve functionality then we can think of surgical repair..
Hope this is helpful for you..
Kindly revert back in case you need any further help in this regard..