Get an X-ray of the hand/wrist, knee, or other relevant area
Ask a doctor to review the X-ray for open or fused growth plates
Look for signs of skeletal maturity on imaging
Use MRI or CT only if a doctor recommends it
Consider your age and puberty stage as rough clues, not proof
Check whether you have had a recent growth spurt
Note whether your shoe, hand, or height measurements have changed recently
Ask an endocrinologist or orthopedic doctor for confirmation
Do not rely on pain, exercise, or stretching to tell if plates are closed
Only imaging can confirm whether growth plates are closed