Application of preshaping technique in Wung procedure of severe asymmetric pectus excavatum

Severe asymmetric pectus excavatum surgery is a technique challenging operation, and it is difficult to obtain good results using general Nuss procedure. In order to ensure the success of the operation, we used a special technique for correction, which is the Wung procedure we designed. Due to the serious deformity, it is very difficult to correct directly. In order to reduce the difficulty, we use a special preshaping technique in our operation, which can fully soften the bony structures of the chest wall in the depression and lay a foundation for the following operation. In addition to this technique, we also made a special design for the position of the steel bars, so as to ensure the final orthopedic effect. This paper reports the application of this technique in a case of severe asymmetric pectus excavatum.