The use of knees is sometimes placed in the pants, sometimes on the outside. The benefits of the inside are good stability, can play the role of “brake” to the greatest extent; the benefits of being used outside are easy to wear and adjust, but the braking will be reduced. In general, when the environmental changes are not obvious, do not need to adjust or take off the knee at any time, on the inside better, on the contrary, on the outside good. Whether it is knee or climbing sticks, are only to provide auxiliary protection. Protect the knee, the most fundamental or to regular exercise, increase the strength of the muscles, to their own scientific and reasonable weight, and activities to maintain a reasonable action. In the knee damage, which is already a fairly common problem.