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Which one is the most common form of arthritis?
ব্যাখ্যা
Explanation: Osteoarthritis (OA) is by far the most common form of arthritis and is a major cause of pain and disability in older people. It is characterised by focal loss of articular cartilage, subchondral osteosclerosis, osteophyte formation at the joint margin, and remodelling of joint contour with enlargement of affected joints.