Anatomy A person had injury to right upper limb he is not able to extend fingers but able to extend wrist and elbow. Nerve injured is – A Radial B Median C Ulnar D Posterior interosseus 💡 Explanation A person had injury to right upper limb he is not able to extend fingers but able to extend wrist and elbow. Nerve injured is - ✓ Correct Answer: D. Posterior interosseus