The biomechanics and functionality of the arch of the feet are important for normal walking and running gait and biomechanics. The support of the mid-foot of the feet are achieved by a number of things, including the alignment of the bones, the ligaments, the muscles as well as the plantar fascia. One of several essential muscles in the dynamic support of the mid-foot of the foot is the posterior tibial muscle. It is a strong muscle that is in the leg. The tendon of this muscle passes down the inside of the ankle joint and attaches underneath the bones that comprise the mid-part of the arch of the feet, so this muscle is so necessary for stabilizing the arch. In some people, this muscle seems to lose it capability to stabilize the foot, causing a condition known as posterior tibial tendon dysfunction or alternatively adult acquired flat foot.
This problem usually starts off with a moderate ache in the arch or inside of the ankle joint and the arch of the foot gradually collapses and the ankle joint rolls inwards. This is all because of the muscle being unable to do its job correctly. If treatment is not implemented, then the pain and disability progresses. In its end stages it could be very disabling and painful. It gradually has a substantial affect on quality of life and the ability to walk. It is extremely exhausting because so much energy is required to walk with Posterior Tibial Tendon Dysfunction.
As the long term outcomes of this problem may be so disabling, it is important that it's caught as soon as possible and therapy begun. The lengthier the delay the more difficult it is to deal with. In the early phases, the only real adequate treatment are usually very firm or rigid foot supports. They must be firm as the forces that are lowering the arch are so high that they need to be resisted. A less firm orthoses will be flattened. A high top hiking or basketball like shoe or sneaker can be very helpful at supporting the ankle joint. If this is not sufficient then more complex ankle supports will be the next step. If this fails or the treatment is started far too late, then surgery is often the only satisfactory treatment at this late stage.