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Pinned fractured lower leg bones. X-ray of the right leg of a 38-year-old patient with a double leg fracture that has been externally fixed. Both the tibia (shin bone, upper bone) and fibula (calf bone, lower bone) were fractured. This external fixation is a post-operative control measure to ensure that the bones are correctly aligned as they heal, and to avoid future complications. (KEYSTONE/SCIENCE PHOTO LIBRARY/ZEPHYR/SCIENCE PHOTO LIBRARY)