Os trapezium secondarium

Case contributed by Dr Hector Rivera-Melo

Presentation

Wrist pain after a fall onto the wrist and shoulder.

Patient Data

Age: 40 years
Gender: Female
X-ray

4v Wrist Study

Small rounded ossicle noted adjacent to the ulnar aspect of the distal trapezium. Otherwise unremarkable study.

Annotated image

Red arrows indicating the small ossicle adjacent to the trapezium on the PA and oblique (semi-supinated) views of the wrist.

Case Discussion

An uncommon accessory ossicle, the os trapezium secondarium should not be confused with a fracture of the trapezium, or base of the 1st metacarpal or 2nd metacarpal.

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Case information

rID: 61308
Published: 27th Jun 2018
Last edited: 14th Jul 2020
Inclusion in quiz mode: Included

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