Arytenoid repositioning device.

Objectives: We report development of a device and technique to manage laryngeal paralysis through minimal-access arytenoid adduction (for unilateral paralysis) and arytenoid abduction (for bilateral paralysis).

Methods: A human cadaver study coupled with directed engineering was used to develop instrumentation designed to secure the muscular process of the arytenoid into favorable adducted or abducted positions. Digital video, photography, and 3-dimensional computed tomographic (CT) imaging of cadaveric larynges were done to evaluate the surgical technique.

Restructuring the vocal fold lamina propria with endoscopic microdissection.

Objectives/hypothesis: The purposes of this preclinical study were to investigate histologic and rheologic outcomes of Microendoscopy of Reinke's space (MERS)-guided minithyrotomy and to assess its instrumentation.

Study Design: Human cadaveric and in vivo animal study.

Methods: Three human cadaveric larynges were treated with MERS-guided placement of Radiesse VoiceGel and immediately evaluated histologically for biomaterial location.