ZEPHYR / SCIENCE PHOTO LIBRARY ZEPHYR / SCIENCE PHOTO LIBRARY
Knee osteoarthritis in obesity. Coloured lateral X-ray of the right knee of a 48-year-old obese man in standing position. The patient weighs 130 kilograms. The spacing of the femoro-tibial joint indicates the presence of osteoarthritis. The condition has been caused by the patient's obesity. Osteoarthritis is a joint disease aggravated by mechanical stress. Symptoms include joint pain, stiffness and swelling.
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