I've been correcting it. There is an action in yoga called camel pose, which I think is a little useful and convenient to do. In addition, I heard people say that standing against the wall, shoulders and buttocks, legs and heels are all against the wall. It is said that after standing for half an hour, I was too tired to persist. If you have perseverance, try it. I suggest not to have surgery, and the sequelae are certain. If the operation is unsuccessful, it will soon be miserable.