This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Orthopaedics
Heberden done denotes involvement of 
Select and explain. 
A. Distal inetrphalangeal joint, B. Proximal interphalangel joint, C. Metacarpophalangeal joint, D. Metatarsophalangeal joint
A: Distal inetrphalangeal joint
Answer: A: Distal inetrphalangeal joint 
Explanation: In osteoahritis of hand:Distal interphalangeal joint: Heberden's nodeProximal interphalangeal joint: Bouchard's node(Refer: Mohindra's Fundamentals of Ohopedics, 2nd edition, pg no. 88, 101, 127)