What are common etiologies of mallet finger?

Updated: Aug 27, 2018
  • Author: Roy A Meals, MD; Chief Editor: Harris Gellman, MD  more...
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Answer

Any forced flexion of the finger while it is held in an extended position risks the integrity of the extensor mechanism at the DIP joint. The classic mechanism of injury is a finger held rigidly in extension or nearly full extension when the finger is struck on the tip by a softball, volleyball, or basketball. Other common mechanisms of injury include forcefully tucking in a bedspread or slipcover or pushing off a sock with extended fingers. A direct blow over the dorsum of the DIP joint may also produce mallet finger.


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