Isolated posterior malleolus fracture

Case contributed by Dr Henry Knipe


Trauma. Unable to weight bear.

Patient Data

Age: 20 years
Gender: Male

Ankle joint effusion seen as an opacity protruding anteriorly from the ankle joint on the lateral projection. An undisplaced posterior malleolus fracture is also seen on the lateral projection. 

Case Discussion

Isolated posterior malleolus fractures are rare. They are the result of axial loading and compression mechanism, and were initially described as "paratrooper fracture" and while still rare is a known injury associated with parachuting. The mechanism in this patient is unknown. 

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Case information

rID: 53392
Published: 17th May 2017
Last edited: 16th Jul 2018
Inclusion in quiz mode: Included

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