I had a regular total shoulder replacement of my right shoulder 7 months ago. I still can't lift my arm in front of me. I can raise it some behind me. I have almost full range of motion using rubber bands and a pulley, I just can't lift my arm. Any ideas what could cause this? I will have a revision of the shoulder in two weeks. The surgeon says that the ends of the replacement can be swapped and I may have limited range of motion after that. Of course that will be a big improvement over my current condition. I notice that some people have had trouble with their reverse shoulder replacement.