Whats a mallet finger?

Tendon Tear: A mallet finger is a tear of the tendon the extends the end joint in the finger. The treatment is a splint for six weeks. The splint has to stay on and dry 100% of the time for the treatment to be effective. See a hand surgeon for appropriate splinting.

Tendon rupture: A mallet finger is caused by the extensor tendon which pulls off the last bone in the finger (distal phalanx). Sometimes a piece of the bone also becomes dislodged. This is caused by a sudden flexion force on an extended finger.