This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Trauma, Subject name: Surgery
[{'content': 'Which of the following structures is fixed first during re-implantation of an amputated digit? \nSelect and explain. \nA. Bone, B. Aery, C. Vein, D. Nerve', 'role': 'user'}, {'content': 'Answer: A \nExplanation: The amputated pa is placed in a clean,dry, plastic bag, which is sealed and placed on top of ice in a Styrofoam container. This keeps the pa sufficiently cool at 4deg C to 10deg C without freezing. The amputated pa is wrapped in alightly moistened saline gauze to prevent tissue drying.With only a few minor variations, the sequence of replantationhas been standardized.The order of repair is usually bone, tendons, muscle units,aeries, nerves, and finally veins.Sabiston 20e pg: 1997', 'role': 'assistant'}]