Type I Odontoid Fracture —Case Report—

Youichi YANAGAWA; Masa-aki TAKEMOTO; Akira TAKASU; Toshihisa SAKAMOTO; Yasushi UN-NO; Yoshiaki OKADA

doi:10.2176/nmc.45.92

Case Reports

Type I Odontoid Fracture

—Case Report—

Youichi YANAGAWA, Masa-aki TAKEMOTO, Akira TAKASU, Toshihisa SAKAMOTO, Yasushi UN-NO, Yoshiaki OKADA

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Keywords: odontoid fracture, Anderson and D’Alonzo type I fracture, magnetic resonance imaging, three-dimensional computed tomography

JOURNAL OPEN ACCESS

2005 Volume 45 Issue 2 Pages 92-96

DOI https://doi.org/10.2176/nmc.45.92

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Abstract

A 17-year-old man presented with sleeping tendency, tenderness of the back of the neck, and left upper monoplegia after a motorcycle accident. Three-dimensional computed tomography on the 2nd hospital day clearly revealed a type I odontoid fracture. His injuries were treated conservatively and he was discharged on the 60th hospital day, with sequelae due to the cervical root avulsion injuries. Type I odontoid fracture is rare and may be caused by coronal distraction of the head and neck area.

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