Anatomy Hyperextension at the metacarpophalangeal joints and flexion at the interphalangeal joints is caused by injury in the A Ulnar nerve B Radial nerve C Median nerve D Musculocutaneous nerve 💡 Explanation Hyperextension at the metacarpophalangeal joints and flexion at the interphalangeal joints is caused by injury in the ✓ Correct Answer: A. Ulnar nerve