1985 Volume 36 Issue 2 Pages 123-128
In spite of the remarkable progress of the radio-and chemotherapy for larngeal cancer, surgical therapy, especially total laryngenctomy, is still playing an important role.
In this paper, voice restoration surgery after the total laryngectomy, namely, tracheo-or crico-hyoidopexia was discussed.
In order to anastomose the trachea with the hyoid bone, lifting of the trachea is indispensable without excessive tension. Since the extensibility of the trachea is closely related with the mechanical properties of the tracheal wall, measurment of the tracheal elasticity prior to surgery might be of importance in performing tracheo-, or crico-hyoidopexia.
As one of the representative factors, Yerzley's resilience of the tranchea was evaluated in human adult trachea and resected canine trachea using variant M-mode display by ultrasonic pulse method after a single impulse excitation of the tracheal wall.
Results obtained indicated that resilience value of the trachea expresses the elastic energy and the extensibility of the tracheal wall.
