著者

湊川 徹 町塚 博文 稲守 徹 西村 善彦

出版者

THE JAPAN OTOLOGICAL SOCIETY

雑誌

Ear Research Japan (ISSN:02889781)

巻号頁・発行日

vol.19, no.1, pp.77-79, 1988 (Released:2011-08-11)

参考文献数

6

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Developmental anatomy of the tympanic membrane and its relation with the malleus handle was studied using fetal temporal bone specimens. During 16th week of gestation the intermediate mesodermal layer which consist of two laminas-radial layer laterally and circular layer medialy-originate around the tympanic ring as loose connective tissue. The inner circular layer hold the malleus handle and fuses with the periosteum (or perichondrium). The outer radial layer which is thicker than the outer circular layer contains copious blood vessels. After 30th week of gestation conjunction between malleus handle and inner circular layer become loose and lost except outer surface of the malleus handle. Only at the tip of the malleus periosteum is thick and hold by the circular layer which seems to become the umbo.

著者

里見 文男 西村 善彦 森 裕司 雲井 健雄

出版者

耳鼻咽喉科臨床学会

雑誌

耳鼻咽喉科臨床 (ISSN:00326313)

巻号頁・発行日

vol.84, no.3, pp.359-362, 1991-03-01 (Released:2011-11-04)

参考文献数

7

被引用文献数

5 3

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A 21-year-old female complained that the right greater cornu of her hyoid bone often slid out and projected to the side of her neck and caused pain on speaking. The projecting tip of the cornu could be returned manually to the original position, and the pain was instantly relieved. A plain radiogram of the neck revealed that the right greater cornu of the hyoid bone was elongated and had a much wider curvature than normal. Good symptomatic relief was obtained with surgical extirpation of the elongated greater cornu. There are various clinical features in the hyoid bone syndrome, including this case. The authors add a review of the literature.