Surgery The patient is unable actively to extend the terminal phalange although the distal interphalangeal joint can be extended passively.This is known as- A Mallet finger B Trigger finger C Butter finger D Ring finger 💡 Explanation The patient is unable actively to extend the terminal phalange although the distal interphalangeal joint can be extended passively.This is known as- ✓ Correct Answer: A. Mallet finger