The foot is a marvel of engineering. Each foot has 26 bones, 100’s of ligaments, muscles and tendons. Most of these elements must function alongside one another in a very precise way so that we can walk, run and carry out a whole variety of activities. The foot is a finely tuned biomechanical work of art as it has to co-ordinate all of the functional structures in order that it can function effectively and without problems to carry out those activities. The foot did evolve to get those capabilities on a soft ground and never wearing footwear, so a few flaws possibly crept in as feet was put into footwear and it was forced to walk and run on the hard cement surfaces. Small weaknesses which were not previously an issue started to show up in those shoes and on those hard surfaces. It is this that is to blame for so many of the conditions that health professionals see in the foot these days.
For example, one of those issues is a idea referred to as supination resistance. This is viewed as the force that is needed to raise the arch of the foot. If this force is high, then the muscles and tendons have to work harder and the ligaments have more strain on them. This may lead to pain in those structures as well as the development of a progressive flat foot. If that force is high, walking and running also needs more energy and could be very tireing. If that supination resistance force is too low, then it will likely be an easy task to raise the arch of the foot. This might result in more ankle sprains since it is so easy to tip the foot over to cause that. From this it should be apparent that a fine balance is required between too much and too low amounts of force which is a good illustration of just what an engineering wonder the foot is and just how easy it is for something to go bad.