For patients with knee pain and numbness, this situation is mostly due to four reasons. First, the degeneration of the knee joint, osteoarthritis patients, mostly in the middle-aged and elderly people, resulting in knee pain and numbness symptoms, especially in weight-bearing activities, the symptoms are particularly obvious. The second is seen in trauma, especially after the trauma, resulting in ligament and joint capsule damage around the knee, if the recovery is not complete, it is also easy to lead to numbness of the knee in the later stage. Third, synovitis in the knee joint, which is mainly caused by synovial hyperplasia and edema after the synovial membrane is stimulated, leading to swelling, pain, limited activities in the knee area, and will lead to numbness in the knee when it is serious. The fourth is seen in the knee meniscus injury patients, in the meniscus obvious damage, tear, rupture, in the activities of the knee will appear obvious symptoms of pain and numbness.