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: Orthopaedics
[{'content': 'Tardy ulnar nerve palsy is associated with which of the following deformity ? \nSelect and explain. \nA. Cubitus varus, B. Cubitus valgus, C. Dislocation, D. Colles fracture', 'role': 'user'}, {'content': 'Answer: A \nExplanation: TARDY ULNAR NERVE PALSY : may develop after: malunited fractures of the lateral humeral condyle in children, - displaced fractures of the medial humeral epicondyle, -dislocations of the elbow, - - contusions of the nerve. - In malunion of the lateral humeral condyle, cubitus va develops; in this deformity the ulnar nerve is gradually str and can become incompletely paralyzed. -also may develop in patients who have a shallow ulnar groov the posterior aspect of the medial humeral epicondyle,. - hypoplasia of the humeral trochlea, . - an inadequate fibrous arch that normally keeps the nerve in the groove, resulting in recurrent subluxation or dislocation of the .nerve. ref : maheswari 9th ed', 'role': 'assistant'}]