Whether the epiphysis is closed or not cannot be determined by self-testing. A common way to determine this is to take an X-ray.
The epiphysis is the cartilage between the epiphysis and the metaphysis, which becomes shorter with age. When the cartilage between the epiphysis and the metaphysis is completely ossified, a tight seam is formed, at which point the epiphysis completely closes and bone growth stops.
X-rays are commonly used to determine whether the epiphyses are closed, and are usually taken of large joints such as the wrist and knee. The epiphyses of young children and adolescents appear as a wide translucent band on the X-ray, indicating that they are in the growth and development stage and can continue to grow taller.
When the age increases, the epiphysis blurs or even disappears on the X-ray, indicating that the long bones are no longer growing and the person can no longer grow taller naturally.
It is recommended to go to the hospital to take an X-ray to determine the epiphyseal closure. Self-measurement of the epiphysis is not scientific and cannot correctly determine the closure of the epiphysis.