The arm a move joints click may be physiological phenomenon, may also be osteoarthritis, traumatic arthritis and other diseases caused by. 1. Physiological phenomenon: if the arm is in a static state for a long time, when suddenly pulled or flexion and extension movements, it is easy to appear clicking sound, belong to the physiological joint popping. 2. Osteoarthritis: the etiology of the disease is not clear, may be related to genetics, cartilage dystrophy, metabolic abnormalities, pathogenic microbial infections, mechanical wear and tear and other factors. When the elbow joint activity is too large, there will be obvious pain, activity disorders and other symptoms, accompanied by bone friction sound, manifested as arm movement joints clicking. 3. Traumatic arthritis: the occurrence of this disease is related to chronic injury, violent trauma, congenital joint dislocation, joint instability and other reasons. Symptoms are not obvious in the early stage, with the further development of the disease, the patient will appear joint friction creaking, that is, arm movement joints click, there will be joint stiffness, joint swelling and other symptoms. In addition to the above reasons, arm movement joint clicking may also be frozen shoulder, rotator cuff injury and other diseases. It is necessary to go to the hospital in time to consult the doctor to clarify the specific cause and standardize the treatment.