Osteoarthritis is the most common type of arthritis

• A. Autoimmune arthritis
• B. Gouty arthritis
• C. Degenerative arthritis
• D. Infectious arthritis

Answer: (C)

Osteoarthritis is a degenerative joint disease caused by wear and tear and aging, which is why it’s the most common form of arthritis. It represents a non-inflammatory, degenerative process where cartilage breaks down and joints undergo structural changes such as bone spur formation and joint space narrowing. This contrasts with autoimmune arthritis, which is driven by an immune attack on the joints (like rheumatoid arthritis); gouty arthritis, which is caused by uric acid crystal deposition; and infectious arthritis, which results from a joint infection. Because OA is the predominant, degenerative type seen in the general population, it’s described as the most common form of arthritis.