This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Miscellaneous, Subject name: Orthopaedics
[{'content': 'Which one of the following nerve is injured in Fracture shaft of humerus? \nSelect and explain. \nA. Median nerve, B. Radial nerve, C. Axillary nerve, D. Ulnar nerve', 'role': 'user'}, {'content': 'Answer: B \nExplanation: (B) Radial nerve COMMON NERVE INJURIESInjuryNerve* Shoulder dislocationAxillary* Humeral shaft fractureRadial* Humeral supracondylar Radial or Median* Elbow medial condyleUlnar* Monteggia dislocationPosterior interosseous* Hip dislocationSciatic* Knee dislocationPeroneal', 'role': 'assistant'}]