Cervical cord compression due to a hypoplastic atlas. Case report

J Neurosurg. 2001 Jan;94(1 Suppl):133-6. doi: 10.3171/spi.2001.94.1.0133.


The authors report the case of a 66-year-old man with progressive, nontraumatic, C-1 cord compression who presented with a complete but hypoplastic atlas. They review six cases found in the literature. Symptoms usually develop in the late adulthood; the sagittal diameter of the canal measures 10 mm or less. The treatment requires a posterior decompression. Opening of the dura is sometimes necessary. There is no pressing need for a primary stabilization device.

Publication types

  • Case Reports
  • Review

MeSH terms

  • Aged
  • Cervical Atlas / abnormalities*
  • Cervical Atlas / diagnostic imaging
  • Cervical Atlas / pathology
  • Cervical Vertebrae* / diagnostic imaging
  • Cervical Vertebrae* / pathology
  • Humans
  • Magnetic Resonance Imaging
  • Male
  • Radiography
  • Spinal Cord Compression / diagnosis
  • Spinal Cord Compression / etiology*
  • Spinal Cord Compression / surgery