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.
Meralgia paraesthetica is a nerve (neurological) condition that causes an area of skin over the upper outer thigh to become painful, numb or tingly. Meralgia paraesthetica is known as a nerve entrapment syndrome. This means it is a collection of symptoms caused by a trapped or compressed nerve. The trapped nerve in question is called the lateral cutaneous nerve of the thigh (also known as the lateral femoral nerve).