Bone knuckle ringing may be due to the following reasons: 1, bone knuckle ringing is a physiological ringing, this ringing is not accompanied by clinical symptoms such as pain and restricted activity, this ringing does not require special treatment, usually only need to be observed or hot compresses. 2, if the bone knuckle ringing, accompanied by symptoms such as popping or restricted activity, or even pain, it is pathological ringing. There are many reasons for pathological ringing, for example, if the knee is ringing, it may be a tear of the free body or meniscus, which appears to be ringing; it may also be bone growth or patellar softening, hyperplasia and synovial creases can cause ringing.