1. What is the mechanism of mallet finger?
2. What are the symptoms?
3. What is the treatment of mallet finger?
Answers:
1. Sudden passive DIP flexion with finger extended, causing extensor tendon rupture.
2. Flexed DIP joint that can't be actively extended, tenderness and edema in the distal dorsal area.
3. Splinting of DIP in extension for 6-8 wks, followed by 2-4 wks of gentle active flexion with night splinting. Surgical repair if there is poor healing or if there is an avulsed fragment involving > 1/3 of the joint.
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