1. 6 Objective:To investigate the effects of anteroposterior cricoid split interposition grafting on children with laryngotracheal stenosis.

2. A laryngeal Cleft (or laryngotracheal Cleft) is an abnormal opening between the larynx and the esophagus through which food and liquid can pass through the larynx into the lungs

3. 20 The phary-esophagus passage could be restored by retaining the mucosa, pectoralis major myocutaneous flap, laryngotracheal flap, split skin flap, stomach transposition and colon interposition etc.