06/02/2026
☝️ Ever jammed your finger and wondered what's actually happening inside? This detailed PIP joint anatomy guide shows exactly what gets damaged — from collateral ligaments and the volar plate to articular cartilage and hairline fractures. Sports injuries are more complex than they look! ⚽🏀 Quiz time: Which structure at the PIP joint prevents hyperextension of the finger and is most commonly injured in sports trauma? Answer below! 👇