This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Thigh, Knee,Leg,Foot & Ankle injuries, Subject name: Orthopaedics
[{'content': "Bohler's angle is decreased in fracture of- \nSelect and explain. \nA. Calcaneum, B. Talus, C. Navicular, D. Cuboid", 'role': 'user'}, {'content': "Answer: A \nExplanation: *Bohler's Tuber angle and crucial angle of Gissane are measured for Intra Aicular Fractures of Calcaneum. Ref: Apley's 9th/e p.926", 'role': 'assistant'}]