This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Peripheral nerve injuries, Subject name: Anatomy
[{'content': 'Tardy ulnar nerve palsy is due to \nSelect and explain. \nA. Cubitus valgus, B. Fixation of the nerve in the groove by osteoahritis, C. Excision of elbow joint, D. Fracture of internal condyle', 'role': 'user'}, {'content': "Answer: A \nExplanation: Tardy ulnar nerve palsy is due to cubitus valgus. Fracture of the lateral condyle of humerus in the long run can lead to complications such as Cubitus valgus. Friction neuritis of the ulnar nerve as it moves over the medial epicondayle every time the elbow is flexed and extended may result in a late ulnar nerve palsy called as 'TARDY ULNAR PALSY'.", 'role': 'assistant'}]