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: Surgery
[{'content': 'Pa of knee most commonly involved in osteoahritis: March 2009 \nSelect and explain. \nA. Medial compament, B. Lateral compament, C. Medial and lateral compament, D. Patellofemoral compament', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. A: Medial Compament In the knee joint medial compament is affected more than the lateral-leading to a varus deformity (genu varum)', 'role': 'assistant'}]