27.2 MB (1.1 MB compressed)
2430 x 3915 pixels
20.6 x 33.3 cm ⏐ 8.1 x 13.1 in (300dpi)
ZEPHYR / SCIENCE PHOTO LIBRARY ZEPHYR / SCIENCE PHOTO LIBRARY
Osteoporosis. Coloured X-ray, side view, of the lumbar (lower) spine of a sixty-eight year old patient with osteoporosis. The second and third vertebrae (top two blocks) have become compressed and are touching each other, which causes pain and immobility. In a healthy spine the vertebrae are all evenly spaced. Osteoporosis causes low bone density and mass, and is most common in post- menopausal women. It may be prevented by a diet rich in calcium and regular weight-bearing exercise.
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