Anomalies and Normal Variations of the Dens

  • Leonard E. Swischuk


There always has been some disagreement about whether the os terminale and the os odontoideum are the same or different bones. However, I have always considered them to be the same, believing that the os terminale becomes the os odontoideum when it enlarges in association with hypoplasia of the dens (1). This also has been suggested by others (2), and the concept is depicted in Fig. 4.1.


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Copyright information

© Springer Science+Business Media New York 2002

Authors and Affiliations

  • Leonard E. Swischuk
    • 1
    • 2
  1. 1.Departments of Radiology and PediatricsThe University of Texas Medical Branch at Galveston Children’s HospitalGalvestonUSA
  2. 2.Pediatric RadiologyThe University of Texas Medical Branch at Galveston Children’s HospitalGalvestonUSA

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