The supination is often reffered to as the opposite of pronation, because it makes your feet move the opposite way as they do when you have pronation. The supination is a problem that leads to serious misalignment of all of the bones in the foot and also it affect some of the tendons. The supination is also a quite serious problem that is able to lead to some very serious body injuries and damage.
To make sure that this will not happen to you there are some symptoms of supination and if you happen to have one of them make sure that you contact an orthopedist, who will be able to properly diagnose you and to make you orvercome the supination. However the symptoms of supination are different for every person and also they depend on the lifestyle that the preson has. Some of the general supination symptoms are shin splints, fatigue, muscle aches and pains, generalized tendonitis, loss of muscular efficiency (reducing walking and running speed and endurance) and cramps. These symptoms are caused by the fact that the soft tissues of the foot have excessive tightness, which causes the bones of the feet to shift and when this happens, the muscles which are attached to those bones also have to shift or twist, in order to reach the bones they are attached to. As supination is twisting of your foot, all the muscles & tendons that run from leg and ankle in your foot is twisted. In case it is left untreated, then supination might be a cause of plantar fasciitis, heel spurs, ball of foot pain, hallux limitus & rigidus, shin splints, high as well as painful arches, and hip, knee, and your lower back pain.
Important to know is that the strongest and most important muscles come from our lower leg and when these muscles course down the leg and across the ankle, they have to twist to maintain their proper attachments in the foot. You may test for the supination by seeing at your leg & foot from back. Generally you will see Achilles tendon that run straight down your leg in heel. If your foot is supinated, tendon may run straight down your leg, however when it lies on your heel then it can twist inward. And this makes outer ankle bone to appear prominent than inner ankle bone.