Avoid excessive joint load, keep a certain posture for a long time, especially less than 90, and don't sit for a long time. Exercise your joints properly, such as swimming more, cycling more, and walking less, especially up and down steps and uneven roads.
Pay attention to keep your knees warm, try to wear trousers, and don't expose your knees directly to cold air.
Strengthen the training of knee joint range of motion. Sit on the affected limb under the key limb at the bedside and actively exercise the quadriceps function; Bend your hips and knees in bed. If knee pain affects normal life, you should go to the hospital for examination and treatment.
Strengthen knee strength exercise: straight leg up, straight leg up with load, straight leg up with short arc load, a pillow under the knee, straight leg up with long arc load, 90 by the bed.
Obese people should control their diet, lose weight, reduce joint load and eat more foods containing protein, vitamins and minerals.