SOVEREIGN, ISM / SCIENCE PHOTO LIBRARY SOVEREIGN, ISM / SCIENCE PHOTO LIBRARY
Pinned wrist fracture. Coloured X-ray of a pinned fracture of the wrist-end of the radius, one of the two lower arm bones. The three pins have been surgically implanted to promote osteosynthesis (bone growth) in a patient with osteoporosis. Osteoporosis is a condition where bone mass and density is lost. This weakens the bones, and fractures like this can happen more easily. This is the right-hand wrist, with the thumb seen at upper left. The other arm bone is the ulna.
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