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
All are true about osteoarthritis, except 
Select and explain. 
A. Glucosamines are beneficial, B. Loose bodies in the ankle joint, C. Quadriceps atrophy, D. MCP is spared
B: Loose bodies in the ankle joint
Answer: B: Loose bodies in the ankle joint 
Explanation: OA does not involve ankle joint.
Loose bodies are seen in OA.