Hello and thanks for all the good information you provide! I’m wondering about exercise, including weight lifting, and if the exertion and possible microtearing of muscle fibers elsewhere in the body can raise cytokines or myfibroblasts or something that would affect a knee with arthrofibrosis. I saw the recent post about stretching and this got me to wondering. I seem to have ongoing AF don’t want to do anything that will set off more inflammation and scar tissue development in my knee.