A patient presented the following symptoms to the doctor: inflammation of his knees that includes pain and tenderness accompanied by a 30% decrease in the amount of cartilage surrounding the bones that make up the knee joint.Which disorder would you diagnose the patient as having?

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Rheumatoid arthritis is a common autoimmune disorder that causes recurring inflammation in synovial joints (Fig.31.8A).Complement proteins,T cells,and B cells all participate in deterioration of the joints,which eventually become immobile.This chronic inflammation gradually causes destruction of the delicate membrane and cartilage within the joint.

A Patient Presented the Following Symptoms to the Doctor: Inflammation