Anatomy Injury to radial nerve in lower pa of spiral groove result in which of the following? A Weakens pronation movement B Results in paralysis of anconeus muscle C Leaves extension at the elbow joint intact D Spares nerve supply to extensor carpi radialis longus 💡 Explanation Injury to radial nerve in lower pa of spiral groove result in which of the following? ✓ Correct Answer: B. Results in paralysis of anconeus muscle