What condition is associated with pain during passive extension of the fingers?

• A. Carpal tunnel syndrome
• B. Trigger finger
• C. Mallet finger
• D. Jersey finger

Answer: (C)

The condition associated with pain during passive extension of the fingers is mallet finger. This injury occurs when there is a disruption in the extensor tendon over the distal phalanx, often resulting from a forceful impact to the tip of the finger. Consequently, when passive extension is attempted, there is notable pain due to the tendon being unable to pull the distal phalanx into an extended position effectively.

In mallet finger, the patient typically cannot extend the finger at the distal joint, and this inability is what leads to pain when attempting to passively extend it. This is a key diagnostic feature that distinguishes it from other conditions affecting the fingers.

In contrasting scenarios, carpal tunnel syndrome primarily results in numbness and tingling from median nerve compression rather than direct pain during finger extension. Trigger finger involves locking or catching of the finger due to tendon sheath issues, but it does not typically cause pain during passive extension. Jersey finger entails an avulsion of the flexor tendon, which affects the ability to flex the finger rather than extending it. Understanding these nuances helps in accurately associating symptoms with the correct condition.