JAMES STEVENSON / SCIENCE PHOTO LIBRARY. JAMES STEVENSON / SCIENCE PHOTO LIBRARY.
Photograph of the bones articulating in the human left knee (genual) joint, seen in anterior aspect. The condyles on the lower head of the femur (top) articulate with corresponding condyles on the tibia, the larger of the two bones in the lower leg. The knee cap (patella) has been superimposed over the femur. The fibula, the smaller bone in the lower leg, is seen at right. The knee joint is the largest in the body.
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