As of the latest update, Google Chrome and Microsoft Edge have made a breaking change to how file uploads are handled. Once your system installs this update, you will not be able to upload new images. Please use another browser until we can get it fixed.

Sesamoid ossicles of the nuchal ligament

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. 

Epidemiology

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

Radiographic features

Plain radiograph
  • well-defined, corticated, round or oval opacity on lateral projection
CT
  • cortical bone with central marrow within the nuchal ligament
Anatomy: Spine
Share article

Article information

rID: 25728
Section: Anatomy
Synonyms or Alternate Spellings:
  • Nuchal ligament sesamoid ossicle
  • Fabella nuchae

Support Radiopaedia and see fewer ads

Cases and figures

  • Case 1
    Drag here to reorder.
  • Case 2
    Drag here to reorder.
  • Case 3
    Drag here to reorder.
  • Case 4
    Drag here to reorder.
  • Updating… Please wait.

     Unable to process the form. Check for errors and try again.

     Thank you for updating your details.