Sesamoid ossicles of the nuchal ligament

Last revised by Mostafa Elfeky on 2 Oct 2023

Sesamoid ossicles of the nuchal ligament are a relatively common anatomical variant that are usually asymptomatic and most commonly occur at the C5-C6 or C6-C7 vertebral levels. 

They occur in ~7.5% of the population, with a male predominance of 3:1 1

  • well-defined, corticated, round or oval opacity on lateral projection

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