Knee replacement is certainly good, as long as the indication for knee replacement is present, and when a standard knee replacement is performed, it has a very important role in improving the function of the knee joint and in pain relief. The main reason why a knee replacement is done is because the function of the knee has been severely affected and the pain in the knee is so severe that there is no way to ensure normal function of the knee and it can seriously affect walking. However, knee replacement can solve all these problems. From this aspect, knee replacement is very good and has a very important role in improving the joint function of the elderly.