Thumb of son has got locked. as per the doctor, joint has been locked by the nerves, however no issues with the bones or blood. please suggest?

Locked thumb: Child needs to be evaluated by a pediatric orthopedic hand specialist. I realize that someone with those credentials would be hard to find. In the United States, the best place to find these surgeons is through the shriner's hospital network. I'm not sure what you have available in india, but the doctor must meet all those criteria to be able to help your son.