ZEPHYR / SCIENCE PHOTO LIBRARY ZEPHYR / SCIENCE PHOTO LIBRARY
Healthy knee. Coloured frontal computed tomography (CT) scan projected on to a magnetic resonance imaging (MRI) scan of the knee of a 30 year old. The knee joint is formed by the articulation of the femur (thigh bone, top) with tibia (shin bone, bottom centre). The smaller fibula (bottom left) is also seen. The patella (knee cap) is seen over the bottom of the femur.
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