Most common form of arthritis is

Most common form of arthritis is?
A. Rheumatoid arthritis
B. Psoriatic arthritis
C. Seronegative arthritis
D. Osteoarthritis

Correct answer : D. Osteoarthritis

Heberden’s node (on the index finger of right hand) in a case of osteoarthritis.

Osteoarthritis is the most common form of arthritis. It affects up to 80% of individuals older than 75 years.

Ref: Davidson’s Principles and Practice of Medicine, 22nd Edition, p1060

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