When the knee joint is cold, the blood vessels will constrict, blood circulation will become worse, and the pain will become worse. Therefore, you must keep warm when the weather is cold. People with arthritis should pay more attention to keeping warm in winter. It is important to keep your joints and adjacent muscles and ligaments warm. It is recommended that patients with arthritis wear gloves, scarves, warm boots, trousers, and appropriately add thermal "equipment" such as leg warmers and waist protectors to resist the damage of outdoor low temperatures to their skin and joints. But don't tighten the knee brace too tightly, otherwise it will hinder local blood circulation and aggravate the condition.

In winter, people prefer to stay in warm rooms and go out less often. However, maintaining daily activity can help your joints stay flexible and function properly. Reduced outdoor activities in winter will lead to a reduction in people's range and activity, which is not conducive to joint health. Moreover, reduced activity can also lead to weight gain and increased pressure on joints. If it's too cold outside, you can choose to do appropriate aerobic exercise indoors. Exercising on a treadmill or exercise bike is an effective way to maintain body temperature and strengthen your joints. In addition, swimming in a heated indoor swimming pool is also a great way to exercise.

Eating more vitamin E and foods containing B vitamins can expand peripheral blood vessels. Eat more warm foods such as nuts and carrots instead of cold foods. Appropriate eating of spicy foods, such as pepper, pepper, and mustard, can promote blood circulation.

Hot compress can dilate blood vessels, improve local blood circulation, relieve muscle spasm and nerve relaxation, and improve tendon flexibility. Wet and hot compresses are recommended. Moist hot compress is to soak a towel in a basin of hot water, wring it out until it is semi-dry, and apply it on your knees. You can cover it with a cotton pad to prevent heat from escaping. Replace every 5 minutes and apply for 20-30 minutes, 1-3 times a day. Soaking your feet in hot water can prevent osteoarthritis. In the cold and humid season, it is best to soak your feet in hot water after returning home from outside, which can improve immunity and prevent rheumatic diseases caused by humid environments. The hot water level for foot soaking should be above the ankle joint for about 20 minutes, which can promote blood circulation in the lower limbs.