Do reverse heel shoes work?

Let's not talk about the original effect. First of all, he is no ordinary high-heeled shoes. You can't find him if you look up heel shoes on the national patent website. Judging from the patent number, it is only a patent for healthy shoes, which is mainly used to correct O-legs. Therefore, it is divided into KPC type and Taobao type, both of which are insoles for correcting O-legs. If you have O-legs and a bad waist, you can buy his healthy shoes, professionally.