Epitransverse process of the atlas

Last revised by Liz Silverstone on 9 Jan 2025

Epitransverse process is a rare anatomical variant of the atlas, consisting of a bony exostosis which extends cephalad from the transverse process of the atlas to articulate with the occipital bone. This process sometimes meets with a paracondylar process from the occipital bone, forming a pseudoarthrosis.

Cases and figures

  • Case 1: paracondylar-epitransverse articulation
  • Case 2
  • Case 3: CT
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