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

Abstract

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.

Minimally invasive surgery of Wenlin chest

“…In the early stage, we designed a special operation for the deformity. We first perform pre-shaping [15] , used Wenlin procedure to complete the treatment of protrusion, and then used Wung procedure or Wang procedure [16,17] to complete the treatment of depression. This operation required a large incision near the sternal angle, which had obvious defects.…”

Surgical treatment of Wenlin chest after Spinal Orthopedics

“…The premise of reasonable correction is to change the sternal elasticity. We use the method of pre-shaping to change the sternum structure first, which makes it possible to treat Wenlin chest with minimally invasive surgery [15] . In our surgery, we used two basic procedures, namely Wenlin procedure and Wung procedure.…”

“…The operation was performed under general anesthesia. It mainly includes two procedures, namely Wenlin procedure [10][11][12] and Wung procedure [13][14][15] . An incision was made in the middle to expose the sternal angle and body, and the pre-shaping on the sternum was performed [15] .…”

“…It mainly includes two procedures, namely Wenlin procedure [10][11][12] and Wung procedure [13][14][15] . An incision was made in the middle to expose the sternal angle and body, and the pre-shaping on the sternum was performed [15] . Two other incisions were made on both sides of the chest wall, and the soft tissues and muscle tissues were dissected to expose the ribs of the sides chest wall.…”

Acute angle deformity: A special local lesion of chest wall bone structures

“…At this time, a special technique is needed to help the correction, i.e. pre-shaping [19] . Pre-shaping is an auxiliary correction technique, which mainly refers to a series of special operations implemented before formal correction.…”