Common causes of knee rustling include physiological factors, osteoarthritis and meniscus injuries. Knee crepitus can be dealt with through general treatment, medication, surgery, and so on. 1. Physiological factors: Knee rustling may be caused by joint degeneration and frequent activities. If it is not accompanied by other abnormal symptoms, such as pain and activity disorders, there is no need for special treatment, and it is a normal physiological phenomenon. In daily life, you can reduce the pressure on your knees and relieve the symptoms by applying localized hot compresses and avoiding excessive activities. 2. Osteoarthritis: Osteoarthritis causes knee rustling and pain, etc. Physical therapy, such as ultrasound, magnetic therapy, etc., can be carried out under the guidance of the doctor to achieve anti-inflammatory effect. Medications can be used, such as etoricoxib tablets and glucosamine sulfate capsules. Injections of drugs such as sodium vitrate can also be prescribed to lubricate the cartilage surface of the joint and relieve symptoms. In severe cases, artificial joint replacement is needed. 3. Meniscus injury: when there is meniscus injury in the knee joint, because there is a tear in the meniscus, there can be rustling in the knee. Minimally invasive arthroscopic examination and arthroscopic meniscus suture can be performed. If knee crepitus occurs frequently and there are abnormal symptoms, it is recommended to consult a doctor as soon as possible. Follow the doctor’s instructions for X-rays, CT and other examinations to clarify the cause of the disease and then targeted treatment.