Surgery A person is not able to extend his metacarpophalangeal joint. Injury to which of the following nerve result in this? A Ulnar nerve B Radial nerve injury C Median nerve injury D Post. Interosseous nerve injury 💡 Explanation A person is not able to extend his metacarpophalangeal joint. Injury to which of the following nerve result in this? ✓ Correct Answer: D. Post. Interosseous nerve injury