In a proper fraction, the numerator is smaller than the denominator. This holds true no matter how large both are. As long as the numerator is the smaller of the two, the fraction is a proper fraction. For example, 998/999 is a proper fraction. Even though the numbers are both large, and they're only separated by 1, the numerator is still smaller than the denominator. Likewise, 1/999 is a proper fraction.
Due to the fact that the sural nerve is so close to the surface of the skin, it makes it much more likely to become injured due to compressions on the skin and the fact that most injuries occur on the surface of the skin.
Tarsal tunnel syndrome can be caused by: 1  Flat feet: fallen arches and tilting of the heel to the outside can stretch the nerve along the inside of the ankle. 2  An enlarged mass that occupies space within the tunnel can compress the nerve. 3  An injury, such as an ankle sprain, can cause tissue swelling near the tunnel and compress the nerve.