Has anybody ever had sugery on the shoulder?I have a torn rotator cuff and have limited use of my arm.?

I dislocated my should 2/15 and have been going to phy. therapy but theres been no improvement.Now my doc says I also have frozen shoulder.so he has me set up for surgery in 2 wks and says he has to go in and clean it up and perhaps He might have to do it again in the future.Am I going to get any good improvements after such surgery,some people have said they doubt it.Also I pay for my own insurance and it seems that its a fight all the time,but do insurances have limited trips for therapy?I have tto start all over again after the surgery.I guess i'm looking for some uplifting news.Thanks.