Incidence and Variants of Posterior Arch Defects of the Atlas Vertebra

  title={Incidence and Variants of Posterior Arch Defects of the Atlas Vertebra},
  author={Sebastian Guenkel and Sladjana Schlaepfer and Sonja Gordic and Guido A. Wanner and Hans-Peter Simmen and Cl{\'e}ment M. L. Werner},
  booktitle={Radiology research and practice},
In order to describe the incidence and existing variants of congenital anomalies of the atlas vertebrae in a Caucasian population, we examined 1069 CT scans of the upper cervical spine. We found 41 cases with altered atlas vertebrae, representing 3.8% of all analyzed patients. With 83% of all found anomalies, the predominant type is characterized by a small dorsal cleft (3.2% of all patients). Rare varieties feature unilateral or bilateral dorsal arch defects, combined anterior and posterior… CONTINUE READING

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Congenital posterior atlas arch defects.

The spine journal : official journal of the North American Spine Society • 2015
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