This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Surgery
[{'content': "Not an Intra-aicular fracture: \nSelect and explain. \nA. Rolando fracture, B. March fracture, C. Bennett's fracture, D. Baon's fracture", 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. b. March fractureMarch fracture: Fatigue fracture of shaft of second or third metatarsalRolando fracture is a three pa or comminuted intraaicular fracture-dislocation of the base of thumb.Pilon fracture: It is a communicated intra-aicular fracture of the distal end of the tibiaBennett\'s fracture: If is an oblique intra-aicular fracture of the base of the first metacarpal with subluxation of the trapezoid\' metacarpal joint"Baon\'s fracture (Marginal fracture): Intra-aicular fractures through the distal aicular surface of the radius, taking a margin, anterior or posterior, of the distal radius with the carpals, displaced anteriorly or posteriorlyHoffa fractures are intra-aicular and are characterised by a fracture in the coronal plane', 'role': 'assistant'}]