This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Orthopaedics
[{'content': 'The material used in vertebroplasty is - \nSelect and explain. \nA. Isomethyl methacrylate, B. Isoethyl methacrylate, C. Polyethyl methacrylate, D. Polymethyl methacrylate', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Vertebroplasty and kyphoplasty are interventional radiologic procedures for the treatment of the intense pain refractory to medical management or bracing caused by vertebral compression fracture associated with osteoporosis, tumors, and trauma.\nVertebroplasty and kyphoplasty involve intraosseous injection of acrylic cement- polymethyl methacrylate under local anesthesia and fluoroscopic guidance.', 'role': 'assistant'}]