MEDICAL PHOTO NHS LOTHIAN / SCIENCE PHOTO LIBRARY MEDICAL PHOTO NHS LOTHIAN / SCIENCE PHOTO LIBRARY
Arthritic knees. X-ray showing deformation of the knees caused by rheumatoid arthritis. The knees are bending in towards each other (knock-knee). The femurs (thigh bones, top) articulate with the tibias (shin bones) and smaller fibulas at the knee. Rheumatoid arthritis is an autoimmune disorder, in which the immune system attacks the body's own tissues. It causes joint inflammation, leading to swelling, stiffness and pain. Treatment of rheumatoid arthritis is with painkilling drugs, antirheumatic drugs and physiotherapy. In severe cases, surgery to replace the affected joints may be performed.
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