Paracondylar process

Last revised by Craig Hacking on 30 Jan 2019

Paracondylar process is a rare anatomical variant of the occipital bone, where a bony exostosis extends caudally from the paracondylar region (lateral to the native occipital condyles), typically articulating with the superior surface of a transverse process of the atlas. This may be unilateral or bilateral. 

The paracondylar process represents a spectrum of occipital vertebrae variations and the 3 other most common variants include:

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Cases and figures

  • Case 1: paracondylar-epitransverse articulation
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  • Case 2: unfused paracondylar process
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