Jim, I share your pain. In past years, I have slipped on ice and landed full force one time on the left shoulder and one time on the right. Both times it took about one year or longer for healing and full movement. Add to that a boil that had to be cut out and repacked daily, and a back stain from shoveling snow. These happened years ago but the memory of them is still fresh.
Now I wear add-on spikes on the shoes while winter walking for exercise.