Thumb proximal phalanx avulsion fracture

Case contributed by Dr Derek Smith

Presentation

Fall 24 hours previously onto outstretched hand. "Snapping" sound at time of fall. Tender anatomical snuff box and thumb tenderness on telescoping.

Patient Data

Age: 30 years
Gender: Female
X-ray

Scaphoid views

Scaphoid views: no scaphoid or carpal injury, normal distal radius

There is an avulsion fracture at the base of the thumb proximal phalanx.

X-ray

Dedicated thumb views

Dedicated thumb views confirm the volar avulsion fracture of the proximal phalanx.

Case Discussion

Another example of the importance of reviewing the edge of the film for unexpected findings. No scaphoid fracture is present, but the avulsion fracture of the proximal phalanx certainly fits with the history and findings.

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Case information

rID: 58069
Published: 29th Jan 2018
Last edited: 16th Jul 2018
Inclusion in quiz mode: Included

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