SOVEREIGN, ISM / SCIENCE PHOTO LIBRARY SOVEREIGN, ISM / SCIENCE PHOTO LIBRARY
Spine in ankylosing spondylitis. Coloured frontal X-ray of the lumbar (lower) spine of a patient with ankylosing spondylitis. This is a condition where the spinal joints become progressively inflamed, and eventually the spine fuses. The severity of cases can vary from mild to severe and immobilising. Treatment is with physiotherapy and anti-inflammatory drugs. The pelvic bones are seen at bottom, and ribs are seen at top.
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