I've had issues with frozen shoulder. Painful!!! Thankfully I found out about Miracle Balls, looked up the exercises to do that would help and did them. It was a miracle! Seriously worth it. Not just for the frozen shoulder either, every exercise I've tried with them has helped more than I ever could have expected. Super simple too. Almost too simple but you will feel the difference. Just try it. Look it up online, I don't really know where you can buy them. They used to sell them at costco but I don't see them there anymore. They were cheap too, totally worth the $. Good luck.