JAPANESE JOURNAL OF ORAL & MAXILLOFACIAL SURGERY

Vol. 54 No. 3       2008

ISSN: 0021-5163      UBIC: 151-J

ABSTRACT

Hyoid bone fracture is very rare because the hyoid bone is anatomically movable and protected by the mandible, cervical vertebrae, and clavicle. We report a case of jaw fractures with a hyoid hone fracture. The patient was a 56-year-old man who was injured by a traffic accident. He was transported to the nearest emergency hospital. Under the diagnosis of multiple fractures of facial hones and general contusion, he was hospitalized and received anti-inflammatory treatment. He was referred to our department for treatment of his intraoral wound. Intraoral examination revealed luxation of the mandibular anterior teeth and detition of the surrounding gingival. CT imaging showed fractures in the left great horn of the hyoid bone, maxilla, orbital floor, nasal bone, and alveolar bone of the mandible. As the patient had only slight swallowing pain, anti-inflammatory treatment was administered during hospitalization, without surgery. Half a year since the accident, CT imaging showed slight restoration of the hyoid bone, and the patient has had no symptoms. Key words: hyoid bone fracture, jaw fractures

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