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': 'Athletic sustained an injury around the knee joint suspecting cartilage damage, which of the following is an investigation of choice - \nSelect and explain. \nA. Pain X-ray, B. Clinical examination, C. Arthroscopy, D. Arthrotomy', 'role': 'user'}, {'content': 'Answer: C \nExplanation: MRI is the investigation of choice for ligamentous and mensical injury of the knee.\nArthroscopy has the advantage that, if a lesion is identified, it can be treated at the same time.\nThe usual protocol for sports injury in a suspected case is to diagnose the injury by MRI and plan the management accordingly.\nAfter that diagnostic arthroscopy is done just before the arthroscopic surgery and all the pathologies are dealt with.', 'role': 'assistant'}]