Sesamoid ossicles of the nuchal ligament

Last revised by Dr Yuranga Weerakkody on 16 Feb 2021

Sesamoid ossicles of the nuchal ligament are a relatively common anatomical variant that are usually asymptomatic and most commonly occur at the C5/6 or C6/7 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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Cases and figures

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