This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Joint disorders, Subject name: Anatomy
Osteoahritis not seen in which of the following joints ? 
Select and explain. 
A. Ankle joints, B. Knee joints, C. Hip joints, D. 1st MP joint
A: Ankle joints
Answer: A: Ankle joints 
Explanation: Osteoahritis affects ceain joints, yet spares others, commonly affected joints include all the cervical and lumbosacral spine, hip, knee, and first metatarsal phalangeal joint In the hands, the distal and proximal interphalyngeal joints and the base of thumb are affected osteoahits rarely effects ankle joints Refer Harrison principles of internal medicine p 2829