Os radiostyloideum

Assoc Prof Frank Gaillard and Dr Henry Knipe et al.

Os radiostyloideum (or persistent radial styloid) is an accessory ossicle of the wrist located adjacent to the radial styloid process and lateral to the mid-portion of the scaphoid

This should not be confused with another bony ossicle in the wrist, os styloideum (part of a carpal boss), which is located between the bases of the 2nd and 3rd metacarpals. 

Anatomy: Upper limb

Anatomy: Upper limb

Article information

rID: 25067
Section: Anatomy
Synonyms or Alternate Spellings:
  • Persistent radial styloid

Support Radiopaedia and see fewer ads

Cases and figures

  • Figure 1: os radiostyloideum (annotated image)
    Drag here to reorder.
  • Case 1 - x-ray
    Drag here to reorder.
  • Figure 2: annotated image
    Drag here to reorder.
  • Case 2 - x-ray
    Drag here to reorder.
  • Updating… Please wait.

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

     Thank you for updating your details.