Beschreibung:
<jats:title>Abstract</jats:title><jats:p><jats:bold>Objectives</jats:bold>: Unilateral vocal fold paralysis can cause a persistent incomplete glottal closure during phonation, resulting in impaired voice function. The aim of this study was to evaluate functional results of medialization thyroplasty using a hydroxyapatite implant (VoCoM).</jats:p><jats:p><jats:bold>Study Design</jats:bold>: Prospective observational cohort study.</jats:p><jats:p><jats:bold>Methods</jats:bold>: Between 1999 and 2003, a total of 26 patients (19 men, 7 women) undergoing medialization thyroplasty using a hydroxyapatite implant because of unilateral vocal fold paralysis were enrolled in the study. To evaluate voice function, the following parameters were measured preoperatively and postoperatively: mean fundamental frequency, mean sound pressure level, frequency and amplitude range (voice range profile), and maximum phonation time. A perceptual assessment of hoarseness was conducted using the Roughness, Breathiness, Hoarseness scale. Furthermore, the magnitude of voice related impairment of the patient's communication skills was rated on a 7‐point scale. A combined parameter called the Voice Dysfunction Index (VDI) was used to rate vocal performance.</jats:p><jats:p><jats:bold>Results</jats:bold>: All patients showed a statistically significant improvement in the VDI, in perceptual voice analysis, in maximum phonation time, and in the dynamic range of voice. One patient experienced a postoperative wound hemorrhage as a minor complication. No further complications or implant extrusions were observed.</jats:p><jats:p><jats:bold>Conclusions</jats:bold>: Medialization thyroplasty using a hydroxyapatite implant is a secure and efficient phonosurgical procedure. Voice quality and patient satisfaction improve significantly after treatment.</jats:p>