
Flat feet can develop as an adult ("adult acquired flatfoot") due to injury, illness, unusual or prolonged stress to the foot, faulty biomechanics,[5] or as part of the normal aging process. Flat feet can also occur in pregnant women as a result of temporary changes, due to increased elastin (elasticity) during pregnancy. However, if developed by adulthood, flat feet generally remain flat permanently.
Causes
You can have a tendency towards fallen arches from birth. Up through the toddler stage, it is common to have flat feet. Throughout childhood, arches tend to normally develop. For reasons not well understood, however, in some cases the feet stay flat and the arch never forms. In many cases this abnormality does not cause symptoms or require any treatment. In other cases, it is due to a condition called tarsal coalition. This occurs when some of the foot bones fuse.
Symptoms
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.
Diagnosis
Your doctor will ask about your symptoms and medical history. A physical and foot exam will be done. Flat feet can be diagnosed by appearance. To determine if the foot is rigid, you may be asked to do some simple tasks.
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Non Surgical Treatment
In rare cases, surgery may be needed if a child has flat feet caused by a problem they're born with (a congenital abnormality). The foot may need to be straightened or the bones may need to be separated if they're fused together. Painkillers and insoles are the first treatment options for flat feet that are caused by a joint problem, such as arthritis or a torn tendon. However, surgery may be recommended if the injury or condition is severely affecting your feet. Where flat feet are caused by a condition that affects the nervous system, special shoes, insoles, or supportive foot or leg braces may be needed. Again, in severe cases, an operation may be needed to straighten the feet.
Surgical Treatment

Surgery for flat feet is separated into three kinds: soft tissue procedures, bone cuts, and bone fusions. Depending on the severity of the flat foot, a person?s age, and whether or not the foot is stiff determines just how the foot can be fixed. In most cases a combination of procedures are performed. With flexible flat feet, surgery is geared at maintaining the motion of the foot and recreating the arch. Commonly this may involve tendon repairs along the inside of the foot to reinforce the main tendon that lifts the arch. When the bone collapse is significant, bone procedures are included to physically rebuild the arch, and realign the heel. The presence of bunions with flat feet is often contributing to the collapse and in most situations requires correction. With rigid flat feet, surgery is focused on restoring the shape of the foot through procedures that eliminate motion. In this case, motion does not exist pre-operatively, so realigning the foot is of utmost importance. The exception, are rigid flat feet due to tarsal coalition (fused segment of bone) in the back of the foot where freeing the blockage can restore function.
Prevention
oll away pain. If you're feeling pain in the arch area, you can get some relief by massaging the bottom of your foot. A regular massage while you're watching TV can do wonders" Stretch out. Doing the same type of stretching exercises that runners do in their warm-up can help reduce arch pain caused by a tight heel cord. One of the best exercises is to stand about three feet from a wall and place your hands on the wall. Leaning toward the wall, bring one foot forward and bend the knee so that the calf muscles of the other leg stretch. Then switch legs. Stretching is particularly important for women who spend all week in heels and then wear exercise shoes or sneakers on weekends. Get measured each time you buy new shoes. Don't assume that since you always wore a particular size, you always will. Too many people try to squeeze into their 'regular' shoe size and wind up with serious foot problems or sores on their feet. When your arch is falling, your feet may get longer or wider and you may or may not feel pain, so getting your foot measured each time you buy shoes is a good indicator of your arch's degeneration. Examine your shoes. If the heel is worn down, replace it. But if the back portion of the shoe is distorted or bent to one side, get yourself into a new pair of supportive shoes like those made specifically for walking. That's because flat feet can affect your walking stride, and failing to replace worn shoes may lead to knee or hip pain.
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.