“Over the years, things have changed dramatically,” Dr. Rosen said. “We now have more and more access to new materials, most of them, in all honesty, for the cosmetic injectable world. The nice thing about these materials is now we have materials with different durations, and most of them can be used through a finer-gauge needle, which significantly facilitates in-office local anesthesia.”
But injections cannot close the posterior third of the vocal fold, cannot address a vocal fold that is too short, cannot medialize a lateralized vocal fold or, in most cases, provide a permanent fix, Dr. Rosen said. The effects of an injection can last from about two months to two years, although lipo injections are permanent.
Dr. Rosen said it is particularly beneficial to keep the patient awake during the procedure. “The ability to monitor vocal fold closure and voice quality with real-time feedback is quite helpful and important,” he said.