Osteoarthritis of both knees mostly refers to osteoarthritis of both knees, and the surgery mostly refers to knee replacement surgery, which belongs to the more mature knee surgery, with better surgical effect, and the knee joints can resume normal activities after the surgery in general. In the late stage of knee osteoarthritis, due to serious degeneration of articular cartilage and osteomalacia, the normal structure of the knee joint is obviously damaged, and there are symptoms such as difficulty in walking, pain, etc. Conservative treatment is difficult to see the effect, and it is necessary to carry out knee replacement surgery to install an artificial prosthesis instead of a worn-out knee joint. Knee replacement surgery is a common knee surgery that has been developed over the years and has become more mature, with better surgical results, and is generally able to resume normal activities after surgery. For conditions related to osteoarthritis surgery of both knees, it is recommended to consult a doctor in time and under the guidance of a professional doctor.