There is a ringing sound in the joint when exercising, mainly because of the relative activities between the articular cartilage and synovial membrane, thus producing a popping sound, which may be a physiological condition or a pathological change, as follows: 1. Physiological condition: Most of the ringing sound is due to the lack of exercise for a long time, which may lead to a small bubble squeezing rupture in the joint after a strenuous exercise causing a popping sound. 2. Pathological change: Mostly seen in synovial crease Syndrome, is due to excessive hyperplasia of synovial folds, synovial folds are larger, synovial folds will skim over the femoral condyles during activities, which will occur ringing. Of course, it can also be seen in meniscal tears, which can also occur when the meniscus is torn and can be accompanied by severe pain.