1, knee osteoarthritis symptoms: early symptoms are swollen joints, pain, to the late stage of joint deformation, limited movement. Knee joint lesions in the systemic joint diseases have the highest incidence, 41% of osteoarthritis occur in the knee joint. Because the knee joint carries the most weight and is the most active of all the joints in the body, it has the greatest chance of being affected. In addition, it is also susceptible to trauma and to factors such as strain, cold, and irritation. Osteoarthritis of the knee joint is characterized by pain when moving too much, difficulty squatting, walking up and down stairs, and most seriously, deformation of the knee joint, often referred to as “O” and “X” shaped legs. The “O” shaped leg is what the people call a “rotund leg”, and the “X” shaped leg is the outward opening of the shape, this is the case, and finally can lead to joint stiffness, can not move, bending can not bend, stretch can not stretch, and finally completely disabled. Knee pain, leg deformation, “O” and “X” shaped legs, etc., walking with difficulty, sleepless nights, if you want to go up the stairs, if no one to help, can not go up. If you want to go up the stairs, you can’t go up without help. The pain in the joints is unbearable during strenuous activities. 2, arthritis is a condition that is often very harmful to the body of the elderly, what triggers arthritis? Osteoarthritis is the most common term for bone spurs in the joints. The cause is the wear and tear and degeneration of the normal joint cartilage for various reasons. Normal joints have a layer of cartilage on the surface, which is commonly referred to as “brittle bone”, and this “brittle bone” is actually very deep, and has a certain degree of elasticity, and can also secrete the lubricating fluid needed by the joints. However, with the increase of age, it will gradually appear wear and tear, and can not regenerate, regeneration ability is very poor, which is also precisely its weakness. When it wears down to a certain level, the subchondral bone begins to be exposed, and the subchondral bone is innervated, so joint pain will occur. As the pain worsens, the symptoms become more severe. In the advanced stage, joint deformation may occur, and once deformation occurs, “O” or “X” shaped legs may be formed. The deformation of the joint causes a change in the line of force of the lower limb, so that the body’s weight is completely pressed on one side of the joint. As we know, normal joints are weight-bearing both inside and outside, but when an “O” leg is present, for example, the weight is concentrated on one side and all the weight is concentrated on the inside. As the patient walks, the weight is concentrated on the medial side after the line of force has changed, resulting in rapid and accelerated wear and tear on the medial side. At this time, there is swelling of the joint, pain, and difficulty with every step, and every step is like a pinprick, very painful and difficult to walk. Therefore, the cause of arthritis is the intense wear and tear caused by, to put it plainly, the aging of the joints. 3, the causes of osteoarthritis: the cause of osteoarthritis after further research, it is now believed that: first, there is a relationship with age, generally older people are more common; second and gender, generally women are more common; third and the body’s obesity is related, the weight of patients are more common; fourth and trauma is related; in addition, there is also a relationship with genetics. Osteoarthritis can occur in any joint of the body, such as shoulder, knee, hip, elbow, ankle, finger, toe, the most common is the knee joint. 4, for the treatment of osteoarthritis means: in the treatment of osteoarthritis, since the 18th century, has been studying the pathology of osteoarthritis, physiology, including its treatment. Nowadays, a more complete system of treatment options has been developed, at present. Early stage: Conservative treatment is often used, such as internal and external application of traditional Chinese medicine, Chinese massage, oral painkillers, oral anti-inflammatory drugs, vitamin drugs, nutritional cartilage drugs, in addition, intra-articular injection of some cartilage lubricants, these are early treatment methods, which are useful for mild degeneration of early joint cartilage. In the middle stage of joint disease, such as the appearance of free bodies, the degree of wear and tear of the articular cartilage is relatively heavy, with some fluid accumulation and swelling. This is often treated by minimally invasive surgery, such as arthroscopic surgery, which involves making 2-3 small 5 mm holes in the joint and using an endoscope, which is as thick as a chopstick head, to observe the lesions in the joint and then treat them. In end-stage joint disease, the joints are severely deformed, with “O”-shaped legs and “X”-shaped legs, making it difficult to walk. The joint gap has disappeared, that is to say, there are no more seams in the joint, the joint has disappeared, full of bone spurs, and the activity has basically disappeared, so walking a few hundred meters is not possible, and the pain is unbearable. In this case, we usually consider artificial knee joint replacement surgery. Knee replacement surgery involves removing the diseased surface of the joint, removing a few millimeters, then cutting out a fresh surface of the joint, wrapping a metal sleeve around the thigh bone and a metal sleeve around the calf bone, and placing a polymer polyethylene sheet in the middle, just like putting a “denture” on a broken tooth. After the surgery, the effect is obvious: first of all, the joint does not hurt when walking, walking freely; secondly, the lower limb force line is corrected, whether it is “O” shaped leg or “X” shaped leg, after the surgery, the leg becomes straight; thirdly, no matter bending or third, no matter bending or straightening, the joint can be restored to normal. After this surgery, basically the serious degeneration of the joint is completely treated.