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Seven patients with reacting perforating collagenosis (RPC) were diagnosed from 1974 to 1982. Experimental production of lesions in two patients confirmed the contributory role of superficial trauma. The pathogenesis of RPC involves transepithelial elimination of altered collagenous bundles. This process may be observed in a wide variety of disparate skin(More)
The interactions of the intrinsic laryngeal muscles (ILMs) in controlling fundamental frequency (F0) and glottal posture remain unclear. In an in vivo canine model, three sets of intrinsic laryngeal muscles-the thyroarytenoid (TA), cricothyroid (CT), and lateral cricoarytenoid plus interarytenoid (LCA/IA) muscle complex-were independently and accurately(More)
OBJECTIVES/HYPOTHESIS Evaluate the effects of asymmetric superior laryngeal nerve stimulation on the vibratory phase, laryngeal posture, and acoustics. STUDY DESIGN Basic science study using an in vivo canine model. METHODS The superior laryngeal nerves were symmetrically and asymmetrically stimulated over eight activation levels to mimic laryngeal(More)
In this commentary, we review our experience with early glottic carcinomas in an attempt to identify points to consider when developing a treatment protocol and technical considerations in oncologic resection to maintain laryngeal function. We highlight several consistent themes: (1) difficult exposure is not always a contraindication to endoscopic(More)
OBJECTIVES/HYPOTHESIS The posterior cricoarytenoid (PCA) muscle is the sole abductor of the glottis and serves important functions during respiration, phonation, cough, and sniff. The present study examines vocal fold abduction dynamics during PCA muscle activation. STUDY DESIGN Basic science study using an in vivo canine model and human subjects. (More)
OBJECTIVES/HYPOTHESIS Medialization thyroplasty (MT) is commonly used to treat glottic insufficiency. In this study, we investigated the phonatory effects of MT implant medialization depth and medial surface shape. METHODS Recurrent laryngeal nerve (RLN) and vagal paralysis were simulated in an in vivo canine. A type 1 MT was performed using a silicone(More)
OBJECTIVES/HYPOTHESIS Evaluate the influence of asymmetric recurrent laryngeal nerve (RLN) stimulation on the vibratory phase, acoustics and aerodynamics of phonation. STUDY DESIGN Basic science study using an in vivo canine model. METHODS The RLNs were symmetrically and asymmetrically stimulated over eight graded levels to test a range of vocal fold(More)