Fallen Arches Causes, Signals And Treatment

Overview

Adult Acquired Flat Foot

?Pes Planus? is the medical term for flat feet. It comes from Latin: Pes = foot and Planus = plain, level ground. Very few people suffer from this condition, as a true flat foot is very rare. Less than 5% of the population has flat feet. The majority of the Australian population, however, has fallen arches (an estimated 60-70% of the population) known in the medical profession as ?excess pronation? or over-pronation. Over-pronation means the foot and ankle tend to roll inwards and the arch collapses with weight-bearing. This is a quite a destructive position for the foot to function in and may cause a wide variety of foot, leg and lower back conditions.




Causes

Abnormal development of the foot, producing Pes Planus, may be due to neurological problems, eg cerebral palsy, polio. Bony or ligamentous abnormalities, eg tarsal coalition (fusion of tarsal bones), accessory navicular bone. A small proportion of flexible flat feet do not correct with growth. Some of these may become rigid if the Pes Planus leads to bony changes.




Symptoms

Pain along the inside of the foot and ankle, where the tendon lies. This may or may not be associated with swelling in the area. Pain that is worse with activity. High-intensity or high-impact activities, such as running, can be very difficult. Some patients can have trouble walking or standing for a long time. Pain on the outside of the ankle. When the foot collapses, the heel bone may shift to a new position outwards. This can put pressure on the outside ankle bone. The same type of pain is found in arthritis in the back of the foot. The symptoms of PTTD may include pain, swelling, a flattening of the arch, and an inward rolling of the ankle. As the condition progresses, the symptoms will change. For example, when PTTD initially develops, there is pain on the inside of the foot and ankle (along the course of the tendon). In addition, the area may be red, warm, and swollen. Later, as the arch begins to flatten, there may still be pain on the inside of the foot and ankle. But at this point, the foot and toes begin to turn outward and the ankle rolls inward. As PTTD becomes more advanced, the arch flattens even more and the pain often shifts to the outside of the foot, below the ankle. The tendon has deteriorated considerably and arthritis often develops in the foot. In more severe cases, arthritis may also develop in the ankle.




Diagnosis

Runners are often advised to get a gait analysis to determine what type of foot they have and so what kind of running shoe they require. This shouldn?t stop at runners. Anyone that plays sports could benefit from this assessment. Sports shoes such as football boots, astro trainers and squash trainers often have very poor arch support and so for the 60-80% of us who do overpronate or have flat feet they are left unsupported. A change of footwear or the insertion of arch support insoles or orthotics can make a massive difference to your risk of injury, to general aches and pains and even to your performance.




Non Surgical Treatment

Treatment in adults generally consists of wearing spacious, comfortable shoes with good arch support. Your doctor may recommend padding for the heel (heel cup) or orthotic shoe devices, which are molded pieces of rubber, leather, metal, plastic, or other synthetic material that are inserted into a shoe. They balance the foot in a neutral position and cushion the foot from excessive pounding. For children, treatment using corrective shoes or inserts is rarely needed, as the arch usually develops normally by age 5.

Surgery is rarely needed.




Surgical Treatment

Flat Foot

This is rare and usually only offered if patients have significant abnormalities in their bones or muscles. Treatments include joint fusion, reshaping the bones in the foot, and occasionally moving around tendons in the foot to help balance out the stresses (called tendon transfer).