Cosmetic appearance is always one thing to consider. Function is another. Humpback deformity of the wrist can occur when the scaphoid bone is fractured. The scaphoid is located on the thumb side of the wrist next to the radius (forearm bone).
If the fracture doesn't heal then the bone fragment can get displaced and move. When that happens all the other bones around the area also shift position. That's how you end up with a deformity.
Long-term studies show that wrist degeneration and eventual arthritis will occur. You may not have pain and disability now but the chances are good you will in time. According to the latest research you would be best advised to have the corrective surgery now. There are no long-term studies to prove this makes a difference. The advice is based on what we know happens if you don't correct the problem.