ZEPHYR / SCIENCE PHOTO LIBRARY ZEPHYR / SCIENCE PHOTO LIBRARY
Osteoarthritis of the thumb. Frontal bilateral X-rays of the hands of a 62-year-old woman with trapeziometacarpal osteoarthritis (osteoarthritis of the joint at the base of the thumb). Both thumbs are affected. Osteoarthritis is a joint disease aggravated by mechanical stress. Symptoms include joint pain, stiffness and swelling.
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