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The bones in question are the tibia and the fibula. Both the tibia and the fibula are classified as long bones. You can remember which is which with the simple mnemonic that the Tibia is the Top bone - if you rub your shin, the tibia is the one you will be touching. The tibia is by far the heavier of the two, bearing much of the body's weight. It is the second largest bone in the human body; only the femur, or thighbone, is larger. Interestingly the position of the tibia is slightly different in men and in women - in a man's leg the tibia is normally vertical, whereas in a woman's leg it slants outward slightly toward the knee.
The fibula is sometimes called the calf bone. Its job is stabilization of the lower leg, particularly at the ankle. The fibula lies parallel to the tibia and is lateral to it, meaning to the outside. The lower tuberosity (swelling) of the fibula forms the outside bone of the ankle.
the tibia and fibula
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