MIRIAM MASLO / SCIENCE PHOTO LIBRARY MIRIAM MASLO / SCIENCE PHOTO LIBRARY
Arthrosis of the knee, coloured frontal X-ray. The joint is swollen and there are osteophytes, abnormal bony growths (pointed protrusions), seen on the bone at centre. Arthrosis is a degenerative joint disease that damages cartilage and bone. As the cartilage wears away, new bone grows as part of the repair process.
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