This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Anatomy of Bone & Fracture Healing, Subject name: Orthopaedics
[{'content': 'Dignostic sign of a fracture - \nSelect and explain. \nA. Abnormal mobility at fracture site, B. Pain at the fracture site, C. Tenderness, D. Swelling', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Abnormal mobility at fracture site Relavance of clinial signs of a fractureUnfailing signs (diagnostic or pathognomonic)o Abnormal mobilityo CrepitusReliable signso Tendernesso ShorteningImportant signso Bruiseo Swellingo Loss of functiono DeformityLate or inconsistent signso Blisterso Ecchymosiso Swelling due to callus", 'role': 'assistant'}]