Below are the comparison between a healthy joint and a joint with osteoarthritis.
A Healthy Joint
In a healthy joint, the ends of bones are encased in smooth cartilage. Together, they are protected by a joint capsule line with a synovial membrane that produces synovial fluid. The capsule and fluid protect the cartilages, muscle and connective tissues.
A Joint With Osteoarthritis
With osteoarthritis, the cartilage becomes worn away. Spurs grow out from the edge of the bone, and synovial fluid increases. Altogether, the joint feels stiff and sore.
Credit: National Institute of Health
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