Now near winter, the weather in the northeast gradually cold, often downstairs in the community, listening to the grandparents told their recent physical condition, cardiovascular disease is the most prevalent disease in the autumn and winter, but for us older people, bone and joint is also the hardest hit. Knee pain is one of the most common symptoms, such as: walking well recently, suddenly a weak knee, feeling pain unbearable; woke up in the middle of the night thirsty, want to get up to get a glass of water, suddenly a pain in the knee; these sudden pain, so we elderly people suffering, seeking solutions everywhere, but if you want to cure the disease, the first thing to understand the cause, know the cause can be treated. The knee is the largest and most complex joint in the body, they silently bear the pressure of human weight, but also mobilize various structures involved in activities, in its “strong” appearance, but in fact hides the nature of vulnerability. If there are no obvious signs, no fever, no redness or swelling of the knee joint, no swelling or fluid, and no deformity or dysfunction of the joint, then basically the initial diagnosis is rheumatic pain. Rheumatic pain is not rheumatism, nor rheumatoid, but only indicates a more common symptom, related to humidity, cold or changes in weather, relatively common in northern people, and the pain is reflected in the muscles or joints, not only in the knee, but also in the waist, hip and shoulder. When the air temperature drops, there will be vasodilation and contraction dysfunction, capillary constriction induced pain, some people have more severe pain, the knee joint at night to sleep with knee pads, some people even all night pain. So what is the best way to relieve this knee pain? Since it is caused by the drop in temperature, the solution is actually very clear, keeping warm is the core of the core. When the knee joint encounters cold air, blood vessels will contract and blood circulation becomes poor, which often makes the pain worse, so in cold weather, attention should be paid to keeping the knee joint warm to prevent it from getting cold. During the day, you can add thick clothing and pants, and locally you can bring a knee brace with appropriate elasticity. The knee brace should not be too tight, otherwise it will obstruct the local blood circulation and aggravate the condition. Avoid working and resting in cold and wet environments, and avoid stimulation of the knee joint by cold objects, such as accidentally falling into an ice cave, which can trigger the problem. The cold season may induce a variety of diseases and problems, and this is just one of them, so we should keep warm and cold whether we are healthy or not, and know that prevention is better than cure.