ZEPHYR / SCIENCE PHOTO LIBRARY ZEPHYR / SCIENCE PHOTO LIBRARY
Spine fracture in osteoporosis. X-rays showing the lumbar (lower back) vertebrae of the spine of a 75-year-old patient affected by osteoporosis, before (left) and after (right) the condition caused a fracture of the L4 vertebra (centre). Front of the body is at right. Osteoporosis (brittle bone disease) causes loss in bone density, making the bones thinner and more likely to break.
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