Os paratrapezium

Os paratrapezium is an accessory ossicle located between distal and radial aspect of the radius and the base of the 1st metacarpal 1

Differential diagnoses include loose bodies secondary to trapreziometacarpal joint osteoarthritis or secondary to trauma (e.g. Bennett's fracture) 2

Upper limb anatomy
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Article information

rID: 25060
Section: Anatomy
Tags: wrist, variant
Synonyms or Alternate Spellings:
  • Paratrapezium
  • Para trapezium
  • Os para trapezium

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Cases and figures

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    Paratrapezium
    Case 1 - annotated image
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    Case 2
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