This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Shoulder and arm injuries, Subject name: Orthopaedics
[{'content': 'Holstein lewis sign is related to which nerve ? \nSelect and explain. \nA. Median nerve, B. Radial nerve, C. Ulnar nerve, D. Axillary nerve', 'role': 'user'}, {'content': 'Answer: B \nExplanation: A Holstein-Lewis fracture is a fracture of the distal third of the humerus resulting in entrapment of the radial nerve. * Most commonly caused by fracture of the humerus, v at the junction of the middle and distal thirds. (Holstein-Lewis fracture) * Radial nerve in paicular jeopardy * The proximal spike of this radial breaks through the lateral coex at a point where the nerve is most closely apposed to the bone . ref : maheswari 9th ed', 'role': 'assistant'}]