Introduction
Glottal insufficiency is a relatively common finding at voice clinics. It is characterized by incomplete closure of the vocal cords when phonating, which causes inappropriate leakage of air through the glottis on attempting to phonate and there is an increased risk of aspiration.Glottal insufficiency is one of the most common contributing factors in patients presented with dysphonia. Unilateral vocal cord paralysis is the most common cause ofincomplete glottal closure. Injection laryngoplasty (IL) or vocal cord augmentation involves injection of various materials into the lateral aspect of the vocal cord. In this study we are using hyaluronic acid in injecting vocal cord under general anaesthesia.

AIM OF THE WORK
This study aims to show the voice outcomes of vocal cord augmentation
with hyaluronic acid under general anaesthesia in patients with glottal insufficiency.

PATIENTS AND METHODS
The study will be carried on twenty patients having glottal insufficiency attending the outpatient clinic, at Otorhinolaryngology Department, Alexandria Main University Hospital, Alexandria, Egypt.
Every patient was subjected to Acoustic analysis of voicepreoperatively and followed up at 2 weeks, 1 month & 6 months postoperative.