Suggest Medication For Shoulder Pain Due To Reconstructive Surgery

Hi, I had re-constructive surgery on my right shoulder just over 2 years ago after a work injury. This past christmas my shoulder popped out of the socket and since then the pain in my shoulder has got to the stage where I am having pain 5-6 days a week. I have read on a website that maybe the anchours where placed incorrectly. What do you think?