The foot is a miracle of design. Each foot has 26 bones, 100’s of ligaments, muscles and tendons. Many of these components need to function with each other in a really precise way so that we can easily walk, run and carry out a whole variety of actions. The foot is a finely tuned biomechanical masterpiece of design as it needs to co-ordinate all of the anatomical structures in order that it can function properly and effortlessly to carry out those actions. The foot did evolve to get those capabilities on a soft surface rather than wearing footwear, so a few defects potentially crept in as feet was placed into shoes and it was forced to walk and run on the hard cement surfaces. Small defects which were not previously a problem started to show up in those shoes and on those hard surfaces. It is this which is responsible for so many of the conditions that podiatrists see in the foot today.
As an example, one of those issues is a approach referred to as supination resistance. This is deemed as the force that's required to lift the arch of the foot. In the event that force is higher, then the muscles and tendons need to work harder and the ligaments have much more strain on them. This might lead to pain in those structures as well as the development of a progressive flat foot. If this force is higher, walking and running also requires more effort and could be really fatiguing. If that supination resistance force is too low, then it will be easy to raise the arch of the foot. This can result in more ankle sprains since it is very easy to tip the foot over to cause that. From this it ought to be obvious that a fine balance is needed between too high and too low amounts of this force which is a good illustration of precisely what an engineering wonder the foot is and just how simple it is for something to go bad.