Knee replacement, X-rays

Credit: MIRIAM MASLO/SCIENCE PHOTO LIBRARY

Caption: Artificial knee. Coloured X-rays of an artificial (prosthetic) knee joint. At left is a frontal X- ray of a straight knee and at right is a side view of a bent knee. The prostheses are implanted into the thigh bone (femur) and shinbone (tibia) with pegs and surgical cement. The artificial joint hinges in an identical way to a normal knee joint. Knee joints need replacing when the protective cartilage that surrounds them is lost. Cartilage can be lost due to injury or osteoarthritis.

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Keywords: artificial implant, artificial joint, bending, bent, bone, bones, coloured, diagnostics, duo, false-coloured, femur, fibula, green, healthcare, hinge, human body, joint, knee, leg, medical, medicine, pair, prosthesis, prosthetic device, prosthetics, radiography, replaced, replacement, tibia, treatment, two, x-ray, x-ray machine, x-rays, xray

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