This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Miscellaneous, Subject name: Orthopaedics
[{'content': 'Most common site of skeletal tuberculosis is \nSelect and explain. \nA. Hip, B. Knee, C. Spine, D. Calvarium', 'role': 'user'}, {'content': 'Answer: C \nExplanation: (C) Spine # Spine is the most common site of bone and joint TB especially Dorso -- lumbar spine.> Most common long bone affected by T.B -- Tibia.> Most common joint affected by T.B -- Hip joint arthritis> Most common synovium affected by T.B -- knee joint synovitis.', 'role': 'assistant'}]