Augmentation of the porcine vocal fold using autologous composite cervical fascia and fat graft. Comparison between the transmuscular and submuscular approaches.

Objectives: To assess the integration of an autologous composite fascia and fat graft implanted into the lamina propria of a porcine vocal fold using two different approaches.

Study Design: An experimental prospective study on the porcine larynx was conducted at a tertiary research institution.

Methods: An external cervical approach was used to expose the thyroid cartilage of 24 healthy minipigs under general anesthesia.