SCOTT CAMAZINE & SUE TRAINOR / SCIENCE PHOTO LIBRARY SCOTT CAMAZINE & SUE TRAINOR / SCIENCE PHOTO LIBRARY
Osteoporosis. Coloured X-ray of the pelvis of an 83-year-old woman, showing decreased bone density due to osteoporosis. The femur is at lower right. It mostly affects post-menopausal women, due to lowered ovarian hormone levels. Osteoporosis (brittle bone disease) primarily affects the pelvis and thigh bones, with a greater risk of bone fractures.
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