Intracordal Injections - Technique a. Granuloma c. Injections at different levels in each cord results in uneven cords which produces weak voice. Injections too deep go into subglottic d. Perichondritis e. Migration 5. Duration is 6 weeks to several months.
Resorption leaves little scarring.
Must test for hypersensitivity reaction. Need to overcorrect as some resorption does occur. Advantage is that collagen is natural component of vocal fold. Disadvantage is that resorption does occur. Botulinum toxin - used to treat adductor spasmodic dysphonia.