The tiny problem of thumb can't be solved, but it can be straightened. Your operation is too late. If you are about one year old, your thumb may not be so thin.

(Dr. Feng Yagao from 252 Hospital solemnly reminds me that it is impossible to fully understand the condition because I can't see the patient face to face. The above suggestions are for reference only. Please go to the hospital for specific diagnosis and treatment under the guidance of a doctor! )