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Mallet Finger

By Dr. B.J. Anderson

We have all seen it. Usually, it is in baseball or basketball games when the ball hits the end of a finger and…. voila! Acute onset of pain and the distal tip has a bend. No matter how much you try, the last phalanx on the finger will not fully extend. It is called a Mallet finger.

What happened is that the tendon that attaches to the base of that distal phalanx on the top of the finger (dorsal aspect) has detached. Either by the tendon rupturing or, more commonly, the bone fragment where the tendon is attached has pulled away from the base of the last or distal phalanx.

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