Epibasal fracture of the thumb

Case contributed by Dr Bruno Di Muzio


Trauma to the thumb.

Patient Data

Age: 25-year-old
Gender: Male

Left hand radiographs

There is a transverse fracture of the proximal first metacarpal bone with no intra-articular extension. 


CT Left wrist

There is a transverse fracture through the proximal metaphyseal region of the fifth metacarpal bone with lateral angulation and no intra-articular extension. The carpal bones are intact, no evidence of scaphoid fractures. Soft tissue swelling and carpal joint effusion noted. 

Case Discussion

Classical appearances of an epibasal fracture of the thumb, which differs from Rolando and Bennett fractures by not extending into the joint space. The CT scan was done given a suspected scaphoid fracture, which was not identified. 

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Case information

rID: 53245
Published: 29th May 2017
Last edited: 14th Aug 2019
Tag: rmh
Inclusion in quiz mode: Included

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