著者

勝見 直樹 岩武 博也 富澤 秀雄 肥塚 泉 加藤 功

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.93, no.3, pp.223-228, 2000-03-01 (Released:2011-11-04)

参考文献数

19

被引用文献数

5 3

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We describe the case of a 25-year-old man with pain on turning his head to either side attributable to a malformation of the hyoid bone. When the neck was turned further to the left, the greater cornu slipped over the tuberculum anterius of the processus transversus, and locked in front of the tuberculum posterius. At the same time the thyroid cartilage caused an upward movement and separated the locked greater cornu. At the moment of this separation, a clicking sound was produced. Diagnosis was established using 3-dimensional reconstruction of CT imaging. The greater cornu of the hyoid bone was noted to be elongated and malformed, and the left greater cornu was obviously blocked by the processus transversus of cervical vertebra V. Excision of both greater cornua relieved the symptoms.