I have big bones since I was a child, and my fingers and toes are all big bones. That's what happened. I am 20 years old this year. What remedial measures are there?
Do farm work, carry and so on all the year round. It will thicken your fingers. But you said you were born, and now you don't know if it's time to fix it. Short and thick joints are generally caused by zinc deficiency and vitamin deficiency. Because of the lack of vitamins, calcium is deposited in the joints. So vitamin and zinc supplementation is the treatment, but it seems that you are a little late at the age of 20.