Osteoarthritis refers to the damage of joint cartilage due to degeneration in old age, which can cause symptoms such as joint pain, limited mobility, and deformity. Rheumatoid arthritis, on the other hand, involves the destruction of joint cartilage solely due to rheumatic diseases, particularly accompanied by abnormal proliferation of the synovium, causing pain and local heating, and resulting in limited joint mobility. Rheumatic diseases feature migrating joint pain, which worsens when exposed to cold. Additionally, diagnostic indicators such as positive rheumatoid factor will show increased levels, thus making it relatively easy to distinguish between osteoarthritis and rheumatoid arthritis.