Epibasal thumb fracture

Case contributed by Dr Andrew Dixon

Presentation

Punched someone's face. Now sore thenar eminence.

Patient Data

Age: 17
Gender: Male
Modality: X-ray

Fracture base of the first metacarpal without intra-articular extension. Mild to moderate displacement. 

Case Discussion

Nice example of an epibasal fracture of the thumb (also called pseudo Bennett's fracture). This two part fracture of the first metacarpal base does not extend to the articular surface allowing distinction from a true Bennett's fracture.  A Rolando fracture is a communited intra-articular fracture of the first metacarpal base while skier's thumb occurs at the first metacarpophalangeal joint due to an avulsion injury of the ulnar collateral ligament. 

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Case Information

rID: 28560
Case created: 31st Mar 2014
Last edited: 17th Feb 2017
Inclusion in quiz mode: Included

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