Executive Editor: Chris Colton

Authors: Renato Fricker, Matej Kastelec, Fiesky Nuñez, Terry Axelrod

Thumb - Distal phalanx: Base - palmar avulsion

General considerations

Discontinuities of the extensor insertion are often referred to as “mallet injury” or “baseball finger”. They can be purely tendinous or bony avulsion fractures.

The injuries can result in subluxation or total dislocation of the joint.

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v1.0 2008-11-08