What is the primary purpose of the mandatory use of shinguards or shinpads for players?
Shinguards are used for protection. In the referees' opinion, shinguards should offer reasonable protection, but what is reasonable? At the moment, the
material of shinguards appears to be the
only factor in determining the value of what is or is not "reasonable". For instance, the use of cardboard as shinguards is considered unreasonable at one end of the hardness scale, just as the use of stainless steel shinguards is unreasonable at the other end. Reasonable shinguards are made of material that fall between these two extremes because they offer protective and shock-absorbing properties whilst being lightweight and comfortable.
But what about
size? Should the size of shinguards relative to the length of a player's lower leg be used to consider whether shinguards offer reasonable protection? It is about time that shinguard size relative to a player's lower leg size should be a factor. By applying the
Laws of Physics, and for shinguards of the same material, the larger the surface area it covers, the more protection it offers both in terms of the total area of protective coverage and in terms of the dissipation and distribution of the incoming force.*
Basically, the larger the size of shinguards relative to the length of a player's lower leg, the better the odds in favour of protection. Referees, players, coaches and spectators should be made aware of this.
*This same principle of mechanics explains why someone who steps on your foot will likely do serious damage if they wore shoes with high stiletto heels compared with shoes with low, flat and wide heels. Ouch!