Chikako Kunieda , Tomohiro Mori , Ujimoto Konomi , Koji Matsushima , Daigo Komazawa , Takeharu Kanazawa
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引用次数: 0
Abstract
Objective
Ultrasound provides real-time anatomical information and motion. We used ultrasound to image the cricoarytenoid joint and its rotating, rocking, and gliding movements.
Methods
Between March and October 2023, 20 patients (10 males and 10 females) who visited our hospital underwent laryngeal ultrasonography. The joint cavity was delineated in four patients (20 %, two males and two females). Conversely, the other patients did not detect it because of acoustic shadows on ultrasonography. We also performed ultrasonography on five volunteers (three males and two females), but only two of them (two females) showed imaging of the joint cavity. Herein, we report the case of a female volunteer in her 30 s who had the best delineation of joint movements.
Results
Joint movements were three-dimensional, whereas ultrasound images were two-dimensional. However, combined with scanning techniques, characteristic joint movements were successfully imaged using ultrasound. Initially, we performed a trans-thyroid cartilage transversal procedure to visualize the muscular process of the arytenoid cartilage and rotational movement. Subsequently, the probe was rotated to an oblique position, and the articular cavity of the cricoarytenoid joint was visualized. We then observed the rocking and gliding movements. In Addition, we demonstrated a seamless transition from gliding to rocking. Finally, we observed that the arytenoid cartilage was pulled toward the posterior cricoarytenoid muscle (PCA) during sniffing. The PCA is the only muscle opening the vocal cords, so the arytenoid cartilage shifts toward the PCA and tilts outward from the larynx.
Conclusion
The presented probe scanning techniques and specific joint movements may help identify notable conditions such as arthritis or joint dislocation.
期刊介绍:
The international journal Auris Nasus Larynx provides the opportunity for rapid, carefully reviewed publications concerning the fundamental and clinical aspects of otorhinolaryngology and related fields. This includes otology, neurotology, bronchoesophagology, laryngology, rhinology, allergology, head and neck medicine and oncologic surgery, maxillofacial and plastic surgery, audiology, speech science.
Original papers, short communications and original case reports can be submitted. Reviews on recent developments are invited regularly and Letters to the Editor commenting on papers or any aspect of Auris Nasus Larynx are welcomed.
Founded in 1973 and previously published by the Society for Promotion of International Otorhinolaryngology, the journal is now the official English-language journal of the Oto-Rhino-Laryngological Society of Japan, Inc. The aim of its new international Editorial Board is to make Auris Nasus Larynx an international forum for high quality research and clinical sciences.