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': 'A 68-yr-old man came with pain and swelling of the right knee. Ahlback grade 2 osteoarthritic changes were found on investigation. What is the further management? \nSelect and explain. \nA. Arthroscopic washout, B. High tibial osteotomy., C. Total knee replacement, D. Conservative', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Type I to Type III are treated by conservative treatment which includes :\n\n\nNon-pharmacological therapy: Lifestyle modification, Physiotherapy (exercise), Bracing & arthrosis\nPharmacological therapy: NSAIDS, intraarticular injection of steroid or hyaluronic acid.\n\n\nIf conservative treatments fail, surgery is indicated and surgical options are:-\n\ni)\xa0Arthroscopic washout or debridement\n\nii) Realignment osteotomy: Proximal / High tibial osteotomy, Distal femoral / Supracondylar osteotomy\niii) Unicompartmental arthroplasty\niv) Total knee arthroplasty / Total knee replacement\n\nType IV and Type V are treated with surgery.\nTotal knee replacement (TKR) is the surgery of choice.', 'role': 'assistant'}]