Fig. 1

Schematic diagram of modified spiral tracheoplasty. A: Tracheal defect. The residual tracheal wall on the healthy side was transected. B: The upper and lower tracheal valves were rotated 90 degrees in the opposite direction. C: Rotation of the upper and lower tracheal valves was completed. D: Anastomosis after torsion of the trachea. E: Tracheal remodeling completed