Knocking on green wood - with both hands (Rapping the side of my head).. but you guys scare me... I have either bursitis or arthritis in both my shoulders, but don't think the rotators are bad. I start every morning with two tylenol and grimace when I put my shirt on, but otherwise nothing to worry about yet... after a long day in the shop, may need a couple of tylenol in the evening too.
My wife just had a total hip replacement in January and in talking with other patient significant others during surgery, one of whom was a physical therapist, he said in order of complications, pain and progress of rehab, Hips were the easiest, then knees and shoulders were last and most difficult. I think that may be because we use our arms more than we realize and probably in ways we don't realize.