There are a lot tissues that are very important for providing strength to the mid-foot from the feet. Among the main 1 has the name the tibialis posterior muscle group. This is a muscle within the deep calf that has a tendon that passes down the inside of the ankle joint and the function is always to support up the mid-foot of the foot. There exists a dysfunction named posterior tibial tendon dysfunction that is a problem with just how effectively the muscle is able to do its action. Whenever the muscle stops doing its job effectively, a gradual flat feet occurs as the additional structures aren’t capable of supporting up the actual mid-foot by themselves.