Hi mcarver,
Left side rotator cuff severely damaged by accepting a friends word that she had turned the electric supply off when I did a repair on a light fitting - unquestionably my own stupid fault for not checking. It actually ripped the muscle apart, in addition it also destroyed the anchor tendon that secures the shoulder blade. I may have got the terminology wrong, but sufficient damage that it cannot be repaired and in the words of my surgeon “See you in 5 years for a new shoulder”.
The right side was whilst sliding down the stairs on my back having lost my footing at the top. In the process my right elbow hit a stair and was jerked up, damaging the right cuff.
It’s a very easy to do and common injury, but I’d preferred not to have done it !
BTW, the ‘Black Rat’ bit under my name means that I’m a retired Police Motorcyclist or LEO on your side of the pond...