It is possible to determine whether the epiphysis is closed by taking an X-ray of the knee, but it is not possible to determine this by the appearance of the knee. To determine whether the epiphysis is closed, you can choose to take an X-ray of the palm or knee joint, and determine whether the epiphysis is closed through the X-ray results, which cannot be determined by the appearance of the knee. X-rays can clearly show the state of the epiphysis. If the epiphysis appears as a transparent, wider band, it means that the epiphysis has not yet closed and will continue to grow. If the epiphysis shows a tight seam, it means that the cartilage has ossified and the epiphysis has closed, which marks the basic end of growth and development, and the height basically won’t grow any more. To determine whether the epiphysis is closed, you should go to a regular hospital and have your doctor determine the closure based on X-ray results.