Figure 1

Postoperative changes of the costoclavicular space in patient with pectus excavatum. This patient was a 17- year- old male patient. The type of pectus excavatum was symmetric and the preoperative Haller index was 3.61. He underwent the Nuss procedure with a single metal bar. The shortest distance was defined as the shortest distance between the first rib and the clavicle on a sagital view of the 3-dimensional chest CT (black color). When the distance between the first rib and the clavicle was shortest, the angle between the long axis of the first rib and the clavicle was defined as the crossing angle (white color). Although the postoperative arm positions were more adducted than the preoperative arm positions bilaterally, the shortest distance became decreased and the crossing angle became increased, postoperatively (Figure A: preoperative status. Figure B: postoperative status, C: the clavicle, 1R: the first rib).