Dinner fork deformity (wrist)

Last revised by Mostafa Elfeky on 17 Jun 2023

A dinner fork deformity, also known as a bayonet deformity, occurs as the result of a malunited distal radial fracture, usually a Colles fracture. The distal fragment is dorsally angulated, displaced and often also impacted. The term is descriptive, as the lateral view of the wrist is similar to the shape of a fork, seen from the side, tines down. 

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