If you want to know if the bone line of your bone is closed or still open, you can see a doctor and get some exams done on it. Typically, if you have completed your growth spurt and there are differences in your body, it might mean closure. Among the known factors are age, hormone fluctuations, and genetics. Nevertheless, the best way to determine that is a physical examination, for instance, an X-ray that the physician can accurately interpret. If you are worried about the development or growth, I advise you to visit an orthopedist who will give you advice and the comfort of your mind by making an examination plan just for you.