The DIP joint is located between which phalanges?

• A. Between the first and second (proximal) phalanges
• B. Between the second and third (distal) phalanges
• C. Between the third and fourth phalanges
• D. Between the fourth and fifth phalanges

Answer: (B)

The distal interphalangeal joint is the joint between the middle and distal phalanges. In each finger, there are three phalanges: proximal, middle, and distal. The joint between proximal and middle is the PIP, while the joint between middle and distal is the DIP. So the DIP is located between the middle and distal phalanges. The other options describe the PIP or involve phalange pairs that don’t form the DIP.