If the knee bones ring when the patient bends the leg, the following measures can be taken: 1. The patient should remember the knee position where the ringing occurs, and the next time he or she does this action, the patient must pay extra attention to the gentle activity and not focus on the force. Many patients have the habit of twisting hard to eliminate the ringing when it occurs, but this is very wrong and may aggravate the original knee injury. 2. Patients should not maintain a long-term sitting position in the near future, i.e., do not keep the knee in a certain position for a long time. After sitting for a long time, it is often necessary to get up and do some gentle activities, such as stretching the limbs, walking slowly on a flat road. 3, during this period, patients should pay attention to the warmth of the knee joint, you can apply appropriate heat to the knee joint. 4, patients need to pay attention to a series of functional exercises for the knee joint, such as leg presses or yoga. 5, if after such treatment, the symptoms are not significantly relieved, you must promptly go to a secondary If the symptoms are not significantly relieved after such treatment, the patient must go to an orthopaedic department of a hospital above the second level for consultation to clarify the cause of the symptoms, and then target the treatment.