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
Pa of knee most commonly involved in osteoahritis: March 2009 
Select and explain. 
A. Medial compament, B. Lateral compament, C. Medial and lateral compament, D. Patellofemoral compament
A: Medial compament
Answer: A: Medial compament 
Explanation: Ans. A: Medial Compament In the knee joint medial compament is affected more than the lateral-leading to a varus deformity (genu varum)