A variety of foot problems can lead to adult acquired flatfoot deformity (AAFD), a condition that results in a fallen arch with the foot pointed outward. Most people - no matter what the cause of their flatfoot - can be helped with orthotics and braces. In patients who have tried orthotics and braces without any relief, surgery can be a very effective way to help with the pain and deformity. This article provides a brief overview of the problems that can result in AAFD. Further details regarding the most common conditions that cause an acquired flatfoot and their treatment options are provided in separate articles. Links to those articles are provided.
The most common acquired flat foot in adults is due to Posterior Tibial Tendon Dysfunction. This develops with repetitive stress on the main supporting tendon of the arch over a long period of time. As the body ages, ligaments and muscles can weaken, leaving the job of supporting the arch all to this tendon. The tendon cannot hold all the weight for long, and it gradually gives out, leading to a progressively lower arch. This form of flat foot is often accompanied by pain radiating behind the ankle, consistent with the course of the posterior tibial tendon. Compounding matters is the fact that the human foot was not originally designed to withstand the types of terrain and forces it is subjected to today. Nowhere in nature do you see the flat hard surfaces that we so commonly walk on in present times. Walking on this type of surface continuously puts unnatural stress on the arch. The fact that the average American is overweight does not help the arch much either-obesity is a leading cause of flat feet as the arch collapses under the excessive bodyweight. Furthermore, the average life span has increased dramatically in the last century, meaning that not only does the arch deal with heavy weight on hard flat ground, but also must now do so for longer periods of time. These are all reasons to take extra care of our feet now in order to prevent problems later.
Flat feet can cause a myriad of symptoms, from experiencing pain in the foot, heels, arch, calves, the shin, the knee, the hip and into the lower back due to overworking of the hip flexors or they may find it hard to stand on tip toes.
You can always give yourself the ?wet test? described above to see whether you have flat feet. Most people who do not notice their flat feet or have no pain associated with them do not think to see a foot doctor. Flat feet can lead to additional problems such as stiffness or pain, however, especially if the condition appears out of nowhere. If you think you may have flat feet, you should seek medical attention to ensure there are no additional issues to worry about. Your doctor will be able to diagnose you with a number of tests. For example, he or she may have you walk around, stand still, or stand on your tiptoes while you are being examined. Your doctor may also examine your foot?s shape and functionality. It?s important to let your foot doctor know about your medical and family history. In some cases, your doctor may order imaging tests such as x-rays or an MRI (magnetic resonance imaging) to determine a cause of your flat foot. If tarsal coalition is suspected in children, a CT scan is often ordered.
Non Surgical Treatment
Most cases of fallen arches are not painful and need no form of treatment. However, common symptoms of fallen arches can include pain in your feet (particularly in the area of your heel or arch), pain in your feet that persists after long bouts of physical activity or standing up, achy feet, or arch pain when standing on the tips of your toes. Most cases of fallen arches are not preventable. Treatments for fallen arches include, rest, ice, compression, medication to relieve pain, orthotics, or in some cases surgery.
Surgical procedures for flat feet vary depending on the root cause of the condition. Surgical correction to control pronation may include bone implants or Achilles tendon lengthening. Tendon transfer, which is a procedure to re-attach a tendon to another area of bone, may also be used to reduce pronation and improve foot function.
Patients may go home the day of surgery or they may require an overnight hospital stay. The leg will be placed in a splint or cast and should be kept elevated for the first two weeks. At that point, sutures are removed. A new cast or a removable boot is then placed. It is important that patients do not put any weight on the corrected foot for six to eight weeks following the operation. Patients may begin bearing weight at eight weeks and usually progress to full weightbearing by 10 to 12 weeks. For some patients, weightbearing requires additional time. After 12 weeks, patients commonly can transition to wearing a shoe. Inserts and ankle braces are often used. Physical therapy may be recommended. There are complications that relate to surgery in general. These include the risks associated with anesthesia, infection, damage to nerves and blood vessels, and bleeding or blood clots. Complications following flatfoot surgery may include wound breakdown or nonunion (incomplete healing of the bones). These complications often can be prevented with proper wound care and rehabilitation. Occasionally, patients may notice some discomfort due to prominent hardware. Removal of hardware can be done at a later time if this is an issue. The overall complication rates for flatfoot surgery are low.