This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Injuries to the Leg, Ankle & Foot, Subject name: Orthopaedics
[{'content': 'Jones fracture is fracture of - \nSelect and explain. \nA. Metatarsal, B. Metacarpal, C. Proximal phalynx, D. Distal phalynx', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Metatarsal Fracture of the base of 5th metatarsal (Jones* fracture)* This is a fracture at the base of the 5th metatarsal, caused by the pull exerted by the tendon of the peroneus brevis muscle inserted on it.* Clinically, there is pain, swelling and tenderness at the outer border of the foot, most marked at the base of the 5th metatarsal.* Diagnosis is easily confirmed on X-ray.* Treatment is by a below-knee walking plaster cast for 3 weeks.", 'role': 'assistant'}]