Microfat injection is a well-established technique for treating vocal fold atrophy and paresis, particularly when more lasting volume restoration is needed. Unlike nanofat (which is processed to remove fat cells), microfat preserves whole fat cells, providing both bulk and regenerative support. It's ideal for patients with longstanding hoarseness, voice fatigue, or breathy voices looking for a natural, long-term solution.

A small amount of fat is harvested from your abdomen or thigh under local anesthesia. After light processing to remove excess fluid, the fat is injected into the vocal fold muscle using a fine needle under endoscopic guidance. The procedure takes around 60–90 minutes from start to finish. There may be slight swelling or soreness at both the donor site and the throat for a few days. Voice rest for 3–5 days is usually recommended to help the fat "settle" and integrate into the tissue. Results can last a year or longer, though touch-up procedures may occasionally be needed. Because it's your own fat, there's no risk of allergic reaction. The benefits include improved vocal strength, less fatigue, and a more stable voice — particularly for those whose voice has changed with age or after surgery.