Fig. 3
From: Computational modeling of airway instability and collapse in tracheomalacia
Sequence of instability and collapse in 10 mm diameter “mucosa” model involving large anterior wall displacement under small force increase. Scale bars show decimal value of tracheal wall strain (multiplied by 100 will give percent) a immediately prior to instability for 0.5 N force. b mid-collapse at 1 N force. c near complete collapse at 2 N force constituting severe tracheomalacia with wall strains reaching over 45% and opposing walls contacting during collapse