Distal Interphalangeal Joint Anatomy

DIP Joint Lateral View

1. Terminal extensor tendon
2. Capsule
3. Proper collateral ligament: insertion=lateral tubercles of P3
4. Accessory collateral ligament: insertion=lateral margins of the volar plate
5. Volar plate
6. FDP tendon
7. Distal phalanx
8. Middle phalanx