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': 'Heterotopic ossification is a condition in which there is deposition of bone around the joints. Which of the following parameters is the most useful for this condition - \nSelect and explain. \nA. Serum calcium, B. Serum phosphate, C. Serum alkaline phosphatase, D. Serum PTH', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Bone scan ( Tc 99 three phase scan) is the most sensitive for early detection of heterotropic ossification. ALKALINE PHOSPHATASE and 24hr PGE2 are screening tests for heterotropic ossification. REF:Essential ohopaedics- Maheshwari- 5th edn - pg no 53.', 'role': 'assistant'}]