What is the primary characteristic of Mallet Toe?

• A. Extension of PIP
• B. Flexion of PIP
• C. Flexion of DIP
• D. Extension of DIP

Answer: (C)

Mallet Toe is characterized by the flexion of the distal interphalangeal (DIP) joint. This condition occurs when the tendon that normally extends the toe at the DIP joint is either injured or becomes dysfunctional, which leads to a fixed flexed position.

In the case of Mallet Toe, the inability to extend the toe at the DIP joint gives the appearance of the toe being "malleted" or drooped down at the end. Hence, the primary characteristic is the flexion at this joint.

Understanding this distinction is crucial for recognizing the condition and differentiating it from other toe deformities, which may have different joint positions. For instance, conditions involving extension of the proximal interphalangeal (PIP) or DIP joints would present differently in terms of toe positioning.