Pain in the Shoulder

Years ago, I had a friend that had to have shoulder surgery, after suffering from a sport injury. Thankfully they had a successful surgery & had no need for a shoulder pain pump. I had never even heard about one before. But after looking into it, I found out that they are used as pain management following some surgeries. But they are finding out now that causing a rare condition which causes the progressive destruction of cartilage in the shoulder joint. Pretty sad, when something that is being used to help with pain, causes more of it!