Overview
Fallen arches, or flatfoot, is a condition in which the arch on the inside of the foot is flat and the entire sole of the foot rests on the ground. It affects about 40% of the general population. Although flat feet in themselves are not usually problematic, they can create problems in the feet, hips, ankles and knees. Pain may be experienced in the lower back if there are alignment problems and if the individual is engaged in a lot of heavy, high impact activities that put stress on the bones and muscles in the lower legs. The arches of most individuals are fully developed by the age of 12 to 13. While some people are born with flat arches, for others the arches fall over time. The tibial tendon, which runs along the inside of the ankle from above the ankle to the arch, can weaken with age and with heavy activity. The posterior tendon, main support structure for the arch, can become inflamed (tendonitis) or even tear if overloaded. For women, wearing high heels can affect the Achilles tendon and alter the structure and function of the ankle. The posterior tibial tendon may compensate for this stress and break down, causing the arches to fall. Obesity is another contributing factor, as well as a serious injury to the ankle or foot, arthritis and bad circulation such as occurs with diabetes.
Causes
There is a lack of normal arch development, probably due to inherent ligamentous laxity. Around 20% of adults have Pes planus. The majority have a flexible flat foot and no symptoms. However, if there is also heel cord contracture, there may be symptoms (see ‘Contributing factors’, below). Loss of support for the arch. Dysfunction of the tibialis posterior tendon, a common and important cause. Tear of the spring ligament (rare). Tibialis anterior rupture (rare). A neuropathic foot, e.g from diabetes, polio, or other neuropathies. Degenerative changes in foot and ankle joints. Inflammatory arthropathy, eg rheumatoid arthritis. Osteoarthritis. Fractures. Bony abnormalities, eg tarsal coalition.
Symptoms
A symptom is something the patient feels and reports, while a sign is something other people, including the doctor may detect. An example of a symptom may be pain in the ankle, while a sign may be a swelling. Symptoms may vary and generally depend on the severity of the condition. Some have an uneven distribution of bodyweight and find that the heel of their shoes wears out more rapidly and more on one side than the other. The most common signs or symptoms of flat feet are pain in the ankle (inner side), there may also be swelling of the foot in general, swelling in the arch of the foot, the calf, knee, the hip, the back, the general lower leg area. People with flat feet may also experience stiffness in one or both feet. One or both feet may be flat on the ground (either no arch, or very slight arch). Shoes may wear unevenly.
Diagnosis
Diagnosis of flat feet or fallen arches can be made by your health practitioner and is based on the following. Clinical assessment involving visual gait assessment, as well as biomechanical assessment. A detailed family and medical history. A pain history assessment determining the location of painful symptoms. Physical palpation of the feet and painful areas. Imaging such as MRI or x-ray can be used by your practitioner to assist in the diagnosis.
Non Surgical Treatment
Fallen arches lead to flat feet, where the arch of your foot collapses and may even touch the ground. This condition is common in infants and young children because your arches are still developing during childhood, says the Instep Foot Clinic. If your flat feet persist into adulthood, or the condition causes pain, a doctor or podiatrist may prescribe strengthening exercises as part of your treatment.
Surgical Treatment
Feet that do not respond to the treatments above may need surgery. The surgery will help to create a supportive arch.
Prevention
Sit up straight in a chair with your feet flat on the ground. Scrunch up the toes of one foot as if you are trying to grab hold of the floor then use your toes to drag your foot a small distance forwards. Do this a couple of times on each foot, but don?t use your leg muscles to push your foot forward — the movement should come solely from the muscles in your feet. Sit in a chair and place a cleaning cloth, towel or small ball on the floor at your feet. Use the toes of one foot to grasp the object and lift it off the floor. This action will require you to clench your toes and contract your arch. Once you have lifted the object a little way off the floor, try to throw it in the air and catch it by stretching your toes and arch out and upwards. Repeat the exercise several times on both feet. Sit on the floor with your legs straight out in front of you then bend your knees out to either side and place the soles of your feet together so your legs form a diamond. Hold on to your ankles and, keeping your heels together at all times, separate your feet so your toes point out to either side. Open and close your feet in this way several times, making sure your little toes stay in contact with the floor throughout the exercise. Starting in the same position, try separating your heels, keeping your toes together at all times.
After Care
Time off work depends on the type of work as well as the surgical procedures performed. . A patient will be required to be non-weight bearing in a cast or splint and use crutches for four to twelve weeks. Usually a patient can return to work in one to two weeks if they are able to work while seated. If a person’s job requires standing and walking, return to work may take several weeks. Complete recovery may take six months to a full year. Complications can occur as with all surgeries, but are minimized by strictly following your surgeon’s post-operative instructions. The main complications include infection, bone that is slow to heal or does not heal, progression or reoccurrence of deformity, a stiff foot, and the need for further surgery. Many of the above complications can be avoided by only putting weight on the operative foot when allowed by your surgeon.
Alba Tooman 