The Finger Flexion Sign is a simple yet powerful clinical test for assessing ulnar nerve integrity, especially in cases of cubital tunnel syndrome or suspected interosseous muscle weakness. In this short video, observe how placing a piece of paper between the middle and ring fingers and pulling it distally can reveal compensatory MCP joint flexion, a positive sign of dysfunction. 📽️ Access the full video in the Physiopedia Plus library: 🔗 View the full video library https://members.physio-pedi