The Exact Diagnosis of Arytenoid Cartilage Dislocation: Morphological and Clinical Studies
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Accession number;04A0024303
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| Title;The Exact Diagnosis of Arytenoid Cartilage Dislocation: Morphological and Clinical Studies |
| Author;
SAEGUSA HIDETO
(Fac. Medicine, Nippon Medical School, JPN)
TANUMA KUMIKO
(Nippon Med. Sch.)
NAKAMURA TSUYOSHI
(Fac. Medicine, Nippon Medical School, JPN)
AINO IICHIRO
(Fac. Medicine, Nippon Medical School, JPN)
KOKAWA TAKAYUKI
(Fac. Medicine, Nippon Medical School, JPN)
IWASAKI CHIHARU
(Fac. Medicine, Nippon Medical School, JPN)
NIIMI SEIJI
(International Univ. Health and Welfare, JPN)
YAGI TOSHIAKI
(Fac. Medicine, Nippon Medical School, JPN)
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Journal Title;Journal of the Japan Broncho-Esophagological Society
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Journal Code:Z0674A
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ISSN:0029-0645
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VOL.54;NO.6;PAGE.401-415(2003)
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| Figure&Table&Reference;FIG.13, TBL.2, REF.19 |
| Pub. Country;Japan |
| Language;Japanese |
| Abstract;Dislocation of the arytenoid cartilage is an usual laryngeal injury that can occur following blunt trauma or medical instrumentation to the laryngeal cavity, for example, after endotracheal incubation. In past reports, the diagnosis of arytenoid dislocation was usually made clinically and using a laryngoscope. The utility of CT imaging in the diagnosis of arytenoid dislocation was reported. Electromyography of the intrinsic laryngeal muscle was also described as a useful diagnostic examination to rule out neurogenic arytenoid cartilage dysfunction, such as recurrent laryngeal nerve palsy. However, it was very difficult to perform an electromyographic examination of the intrinsic laryngeal muscle and to understand the reciprocal positions of the laryngeal cartilage from CT imaging for general otolaryngologists. Additionally, a means of distinguishing whether the arytenoid dislocation was the anterior type or the posterior type, and to reduce the arytenoid dislocation according to the dislocated type, has not been established. Thus, it is necessary to establish an effective diagnostic protocol that does not require the patient's effort or cause physical damage. First, we made the morphological observations of the laryngeal cavity for a model of arytenoid dislocation extracted and prepared from human cadaver. The model of the anterior dislocation of the arytenoid cartilage demonstrated that the vocal fold of the affected side was flaccid and the arytenoid cartilage was displaced high-laterally, with an abnormal medial projection of the vocal process on the adductive position of the arytenoid cartilage when the muscular process of the arytenoid cartilage was pulled along the lateral cricoarytenoid muscle.... (author abst.) |
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