Hello elderly patients: Recently, we found that many elderly patients suffer from osteoarthrosis of both knees (i.e., pain and weakness in both knees, difficulty in going up and down steps, difficulty in squatting, sometimes accompanied by a frictional sound in both knees). However, during the treatment process, due to the excessive importance of the osteophytes in the X-ray film, they take the medicine to strengthen the kidneys and bones and to disperse the cold. If you have a single knee or both knees with swelling and pain, it is likely that you have synovitis of the knee, which is also known as damp-heat in Chinese medicine. We would like to remind those who suffer from knee pain to go to the hospital for diagnosis and treatment, and then use the medication to get twice the result with half the effort.