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': "March fracture is ? \nSelect and explain. \nA. Neck of 2nd metatarsal, B. Neck of 3' metatarsal, C. Shaft of 4th metatarsal, D. Head of 5th metatarsal", 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Neck of 2nd metatarsal Metatarsal stress fractures are common in distance runners and ballet dancers. The second metatarsal neck is the most likely site for stress fracture, but all metatarsals are susceptible. March fracture, also known as fatigue fracture or stress fracture of metatarsal bone, is the fracture of the distal third of one of the metatarsals occurring because of recurrent stress. It is more common in soldiers, but also occurs in hikers, organists, and even those, like hospital doctors, whose duties entail much standing. March fractures most commonly occur in the second and third metatarsal bones of the foot.", 'role': 'assistant'}]